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Building a western style house compared to Thai build


Damian Murray

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We are currently building a house. Having done the calculations much of the heat comes via the roof rather than the walls. We have a large roof area and effective solar chimney at the ridge and air intakes at the soffit. The roof has a minimum 1 metre overhang. The roof ventillation works using natural ventillation to create a draft using the roof solar energy. The result is a very cool house.

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1 hour ago, themerg said:

I personally like the Thai style. I think it is for the climate and the culture.

Yes, there is a lot of bricks, then concrete over the bricks. There is also a lot of rebar.

There are  (3) two-story houses being built on the property where I rent.

I have watched the building of one house that is 3 meters from my front door.

I will move into that  rental house on September 1, 2018.

Yes, the Thai building way and style is different from the USA, but this is Thailand, not the USA.

Many hundreds of thousands of Thai buildings have been around for 700 years ?

My question is : Do you plan on living 700 years ?

Go with the Thai style, otherwise, you look like and outcast.

Thai style is nice to look at.. and I used elements of Thai architecture in my place..  Unfortunately many houses are being built with no regards to the climate.  They continue to build with one layer of small brick or cement block, no insulation and what they produce is an oven.  And a very energy hungry oven it is!  My neighbor built a large house next to me.. he went for the biggest place he could build for his money. Now he complains that it gets very hot and he has had to install a number of air-con units. They are strapped for cash paying for their build and now they have large electricity bills..  Our place is smaller but stays cool (cavity walls & insulation).. there is one air-con in our daughter's bedroom that gets used a bit 2 or 3 months of the year.. our electricity bill is normally 700 Bt a month when the daughter is using her air-con it goes up to 1,000  .... the neighbor..  2,500 a month often more.. 

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25 minutes ago, Laza 45 said:

Some temples yes.. houses no..

 

Agreed.  I suspect there is not one Thai normal house even 200 years old let alone 700. The traditional teak house would have the greatest longevity and even that requires maintenance to last for such a period,  not something the Thais are keen on.

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29 minutes ago, Esso49 said:

Agreed.  I suspect there is not one Thai normal house even 200 years old let alone 700. The traditional teak house would have the greatest longevity and even that requires maintenance to last for such a period,  not something the Thais are keen on.

It is an interesting point.. Temples built of stone were built for the Gods to reside in.. mere mortals lived in houses of wood.  No one lived in Angkor Wat or the other temples of the Khmer period.  It would be interesting to see the homes of the elite of that period.. I'm sure they were grande.  The homes of the poor workers were probably not much different to wood and bamboo structures that you see in rural Thailand and Cambodia today.. 

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45 minutes ago, Laza 45 said:

It is an interesting point.. Temples built of stone were built for the Gods to reside in.. mere mortals lived in houses of wood.  No one lived in Angkor Wat or the other temples of the Khmer period.  It would be interesting to see the homes of the elite of that period.. I'm sure they were grande.  The homes of the poor workers were probably not much different to wood and bamboo structures that you see in rural Thailand and Cambodia today.. 


Indeed.
I've visited many temple sites in Thailand and Cambodia over the last couple of years and the one thing that stands out (besides the temples themselves) is that there are no other buildings (shops, homes, restaurants, etc). At the height of the Khmer Empire, Angkor is thought to have been the largest city in the world, larger than Rome or London or any city in China at the time. (That would apply in terms of population as well as the total area the city occupied at it's greatest point.)

Most of the homes and businesses, if not all of them, would have been built of bamboo, reed and grass (thatch) mats with dirt floors. I've seen a couple "buildings" that were nothing but a small rectangle of stone (laterite usually) maybe 2-3 feet high and that was it. The plaques (if there are any) would note that the structure was "probably" where the monks lived. The upper portion of the walls and roof would have been made of bamboo and thatch most likely.

The "elite" probably lived in grand palaces made of the finest teak, but likely with roofs similar to everyone else's (i.e. made of thatch and bamboo). I read something awhile back about how the Khmer never mastered the art of roof building (using beams and trusses) and that is why so many structures that have survived to this day, have no roofs as they too were originally constructed of thatch and bamboo.

The larger temples used bricks (and in some cases tiles) but had to make them in the "step" pattern, with each layer slightly further in until they met at the top. This helped give them their distinctive shapes and allowed them to survive until now.

However, in these days we tend to have better (?) quality building materials and better (?) building expertise and the ability (?) to construct homes that are more weather resistant. I'm sure if we come back in a thousand years from now, Walking Street will still have a mass of go-go bars along it's length and there will still be evidence of many (non-religious) buildings that future archaeologists will be able to identify.
I've been in war zones where almost every house you see had been damaged by bombs, artillery, tank shells, rockets and bullets. In many cases the roofs were gone (often made of wood and burned or collapsed) but a lot of the time the walls were still standing (just with a few new holes in them) and the foundations were still sound (more or less). I spent 5 months living in the remains of an old warehouse that was missing it's roof entirely but the walls and floor were still OK so the engineers cleaned it up and slapped a roof on it and we were good to go.

I suspect that a lot of current homes made of brick and cement will also survive for centuries, assuming they aren't torn down by future generations for whatever reason.

I also suspect that those future archaeologists will look at many of the surviving structures of "our" time and wonder "what the hell" were these used for and why do so many of them have raised platforms in the middle of them with stainless steel poles sticking out of them !?!?

 

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17 hours ago, Muhendis said:

Outside the house there is bright sunshine which can be devastatingly hot and, even though the air is moving it feels hot. Inside the house the internal walls never heat up to external ambient which in turn keeps the air cooler. This is simple, basic physics. It is not a revolutionary discovery although I suspect you think otherwise? Don't forget that the bricks and mortar store cool as well as heat. This can be a problem in the night time when the temperature stored in the walls is higher than the cooler air outside. 

Ok so you live in a very quiet area that gets "quite cold" every night....you leave windows open all night

and the inside of the house "gets cold"  then at sunrise you close all windows..to keep the cold in..

during the day eventually the inside and outside ambient temperature  becomes equal ?

 

Quote

the second law of thermodynamics boils down to the following fact: heat flows from hot to cold until everything is at the same temperature.

 

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21 hours ago, Damian Murray said:

Thank you so much guys for all your tips and hints, I think my main issues were about tying the blocks into the colums which my Thai wife said doesn't happen too much, her parents house has major cracks in the corners where it hasn't been tied in, I do understand that you will have settling cracks no problem but looks like I'll just have to insist on colums ties during the build, also with the cavity wall, I'm trying to keep the heat out, I don't mind going overkill on the insulation if it will def work, another quick question, has anyone ever used block and beem for the sub floor? Is it cheaper than a solid concrete floor as my wife wants the house raised a few mts of the ground

 

Have not used that style. There are two main type of floor, one is fill with sand/earth and pour a slab on top, The other, which sounds like what you want, is long slabs laid on top of the footing-beam-thingys. These slabs are a bit flexible, so they support them with Eucalyptus during construction. On top of the beams they then lay wire-mesh and pour concrete, another 5cm or thereabouts.

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19 hours ago, HHTel said:

After initially living in a rented house with single block walls, I went for double skin (cavity) walls.  The heat transferred from a single wall that has the sun stays hot on the inside just like a storage heater.  I have an insulated roof, cavity walls with foam insulation and even without aircon, the house remains cool inside.

I agree about the sun on the walls. I made sure we had sufficient roof overhang that I never have the sun on the walls. It makes a big difference and I think is worth considering. An added benefit is the covered outdoor space (terrace/patio/verandah) which is very useful.

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1 hour ago, johng said:

Ok so you live in a very quiet area that gets "quite cold" every night....you leave windows open all night

and the inside of the house "gets cold"  then at sunrise you close all windows..to keep the cold in..

during the day eventually the inside and outside ambient temperature  becomes equal ?

 

Quote

the second law of thermodynamics boils down to the following fact: heat flows from hot to cold until everything is at the same temperature.

Absolutely spot on johng. The only factor not included is time and it is the insulating materials which affect that. (By the way you're not keeping the cold in so much as keeping the heat out).

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6 hours ago, fredge45 said:

Minimum 15 cm fiberglass insulation in the ceilings.  Vent the attic and don't forget to make air inlets in the eaves.  Aerated block outside, red brick inside double walls.

You're absolute right, but it merely sound like a house for a utterly cold Northern country with 15 cm mineral wool over ceilings...

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1 hour ago, phibunmike said:

I agree about the sun on the walls. I made sure we had sufficient roof overhang that I never have the sun on the walls. It makes a big difference and I think is worth considering. An added benefit is the covered outdoor space (terrace/patio/verandah) which is very useful.

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Mine's a two story house so a roof overhang doesn't work for shade.  Talking of cavity walls, every wall in the house both upstairs and down are double skin.  Not quite sure how that happened but it does mean there are no visible pillars.

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54 minutes ago, Muhendis said:

. (By the way you're not keeping the cold in so much as keeping the heat out).

Which fundamentally is the same? In the summertime we rarely have any windows open which keeps the heat from outside coming in, the "insulation" keeps the inside cool, if it gets too warm or humid (more of an issue than heat a lot of times!) we put AC on at 28c which keeps the inside cool & dry with minimal losses to the outside! ? 

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I designed my own home and went for the cavity wall construction and it does work. There is no dispute that if things are left long enough they will equalise  but the cavity wall slows down the heat penetration and keeps the interior cool from having the AC on one evening through to the next. Prior to the house being built I lived in my wife's family home just a few yards away and certainly saw the benefit. 

I sourced units and built my own western style kitchen. The builder couldn't understand why I wanted the kitchen windowsill at 1m, Thai standard is 800mm but when he saw it finished with my UK washing machine under the worktop it sunk in.

As someone has mentioned, it is essential the foundations are more than adequate otherwise wall cracks are almost inevitable. Mine has been up 9 years now and the only cracks came from concrete shrinkage. Our builder was in a bit of a hurry to finish off and tiled the bathrooms before the concrete had fullly cured, some of the tiles that had been cut to shape developed a crack from the cut corner.

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2 hours ago, Muhendis said:

the second law of thermodynamics boils down to the following fact: heat flows from hot to cold until everything is at the same temperature.

1 hour ago, CGW said:

Which fundamentally is the same? In the summertime we rarely have any windows open which keeps the heat from outside coming in, the "insulation" keeps the inside cool, if it gets too warm or humid (more of an issue than heat a lot of times!) we put AC on at 28c which keeps the inside cool & dry with minimal losses to the outside! ? 

Yes. To all intents and purposes it is the same however note the second law of thermodynamics above as supplied by johng. There is no doubt that a thermally insulated house is a must for countries that are very hot and for countries that are very cold as your example shows.

 

 

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Post 27 mentions damp course barrier and lintels. Both products should be easy to buy in any province in Thailand. I see Lintels made by Q Con and Diamond Building Products at more than one builders merchants store in Buriram. Moisture barrier plastic in various thickness and widths are easy to order and often on stock in Buriram. 

Buriram Autoclaved Steel Door Lintel Home Delivery.jpg

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7 minutes ago, Muhendis said:

Yes. To all intents and purposes it is the same however note the second law of thermodynamics above as supplied by johng. There is no doubt that a thermally insulated house is a must for countries that are very hot and for countries that are very cold as your example shows.

Yep, I can confirm that "the second law of thermodynamics" is correct, If I leave the windows open and its hotter outside than in, it gets hotter inside ?

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Have to say guys, all your advice has been great and I intend to use a little bit of all your suggestions when I start my build, now,can you also tell me, in today's financial climate in Thailand, would now be a good time to start building, are materials any cheaper now than say 5 years ago?

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2 minutes ago, Damian Murray said:

Have to say guys, all your advice has been great and I intend to use a little bit of all your suggestions when I start my build, now,can you also tell me, in today's financial climate in Thailand, would now be a good time to start building, are materials any cheaper now than say 5 years ago?

Very few things in life ever get cheaper , but some things as they become more readily available do come down in price . such as AAC block (super block) which a few years ago was difficult to find and expensive, now it is available everywhere and at a better price. But overall it is more expensive to build now than it ever was, and IMO it is not going down any time soon, or ever. 

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The post above is excellent. labor will always go up in cost. AAC blocks cost less in 2018 than I paid in 2007.  Much wider selection of modern building materials available now. Build when you can afford to build, with a decent builder, and you will be happier every day rather than living in that rental or inlaw's house. 

 

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11 hours ago, Rally123 said:

Start your build towards the end of the rain season and hopefully get the roof on before the start of the next. Your builders can then work in the dry. No excuses then.

Quite, soil should still be relatively soft to do the footings and dry weather while pouring the concrete.

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On 8/11/2018 at 6:33 AM, Damian Murray said:

Have to say guys, all your advice has been great and I intend to use a little bit of all your suggestions when I start my build, now,can you also tell me, in today's financial climate in Thailand, would now be a good time to start building, are materials any cheaper now than say 5 years ago?

14 years ago, not 5, but I had a house built in Udon Thani; single level, 120 s/m, 3 BR, 2 bath, western kitchen, tile roof for just under B500,000, all in.  

A friend built a very similar house in Buriram 2 years ago and it cost B1.3 million.

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My main criticism of Thai house construction is the capacity of a concrete beam to span more than about 4 metres. This governs the size of your rooms, but worse, leaves you with a concrete column bang in the middle of your living room which I'd bump into at 2am when off to raid the fridge.

I'm not qualified so don't slap me down too hard. I would be looking for a more elaborate roof support system to avoid this.  Aircraft hangars don't have this problem.

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I swung a hammer for quite a while and worked for a foundation pouring company here in the USA.  In one day we would go and set up the forms for one house in the morning, the trucks would come and pour in the cement.  The site was already graded and staked out and we grunts just went to work.  We do a little smoothing and pushing to make sure cement flowed correctly.  This was a 5 man crew with all the form panels unloaded from the flatbed truck.  Then in the afternoon we would go over to the house where we had poured a day or so before and remove all the forms from that house, load those forms on the truck. and repeat.  We used standard sized panel forms that we tied together.  Knocked off the ends of the ties when cement was cured, removed the forms, loaded them back on the truck.  Then depending on the site we coated the walls with a thick bunch of waterproofing goo.  It was pretty hard work, but went pretty smoothly. Some house foundations had a few extra zigs and zags or door openings we had to do a little carpentry on for special forms, but my boss in general had simple designs for his houses that made things quick and easy.

 

  From what I have seen in Thailand, pouring foundations and walls in a simple rapid fashion such as this would not go over all.  They don't seem to be interested in finishing quickly.  They seem to want more laborers so they like individual concrete block, that they can labor over.   In the old days in the USA I have seen construction companies taking time to build the form panels (just basic plywood with some 2x4 bracking), but my boss' company already had those built, and replaced some degraded ones now and then.  His forms were ready to go at a moment's notice.  And we were busy every day running from one job site to another.  New England has a relatively short construction season compared to some areas, so ramming and jamming in the summer time is what we did.

 

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12 hours ago, dddave said:

14 years ago, not 5, but I had a house built in Udon Thani; single level, 120 s/m, 3 BR, 2 bath, western kitchen, tile roof for just under B500,000, all in.  

A friend built a very similar house in Buriram 2 years ago and it cost B1.3 million.

interesting numbers.  sure is still a lot cheaper than just about anything in the west except small pre fab houses.  How much did the land cost? and what sort of arrangement did you have for the land since foreigners can't own the land.  Did you have a long term lease?  Put it in the wife's name?  did the wife or her family already own the land?

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Standard H beams or I Beams sold all over Thailand are six meters in length. It is not a challenge to have rooms in your Thailand home with spans longer than 4 meters. No need for a column if you work with your architect to use H Beams or I beams as support. Or you can have even larger rear bar sizes in larger concrete columns and larger concrete beams to easily build rooms with spans longer than six meters. This is not rocket science and a reasonable licensed Thai architect can do these plans. I have this at my home in Buriram and it was not a challenge in 2007.  Rebar can be straight and need not always be bent when delivered to your home in Isaan. 

Buriram High Strength Straight Rebar Steel Delivery.jpg

Steel to build Buriram Home delivery.jpg

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9 hours ago, gk10002000 said:

interesting numbers.  sure is still a lot cheaper than just about anything in the west except small pre fab houses.  How much did the land cost? and what sort of arrangement did you have for the land since foreigners can't own the land.  Did you have a long term lease?  Put it in the wife's name?  did the wife or her family already own the land?

Girlfriend owned the land, deed in her name.  I was in full Sir Galahad mode, saving the fair maiden. 

After a year of watching rice grow as my primary entertainment, I bailed. 

She got the house and I learned a costly lesson.

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