unheard

There are none - that's the problem. Well there are normally some present, usually in the form of a traditional Thai gable vent. But those are not effective in venting under all conditions. In comparison, many roofs in the west are of the ventilated attic type - with intake and exhausts (e.g. vented ridges). The intake must be sized to flow at least as much air as the exhaust does in order to be efficient.

Don't know about that. Have you ever tried to touch the radiant barrier layer under concrete tiles at the end of a hot, sunny day? Isn't it scorching hot? (an honest question btw). The radiant barrier will prevent re-radiated heat from heating up the ceiling, but it will surely heat up the attic air by convection. The PU insulated metal (especially with thicker foams) feels barely warm to touch in the open Sun.

I don't know what their belief is. Slotted eves placed on every roof corner is a common practice over here. They're being installed as fresh air intakes. Their throughput is more than enough for any roof designed without exhaust openings.

double

There are some older threads with some reports on spray-on insulation. You might try to locate them via common search engines since the forum search is not that great in comparison. That said, I remember seeing only a few posters mentioning the practice. It's uncommon for Thailand. btw, if properly applied with a right mixture of ingredients it could be a really good option for the already installed tile roof. Besides adding great insulating properties, PU insulation will also lock the tiles in place, preventing them from moving/sliding around due to the daily expansion/contraction thermal cycle - a common cause for leaks. But then I think, the silver foil would need to be stripped off. It sounds like it's already too late for you since the roof is done.

Sure but that profile is not readily available with thick PU insulation as an option. At least that was the case last time I shopped at my local BlueScope outlet. That profile was only available with a very thin, silvery looking material as glued-on insulation.

Steel, PU-insulated roof. Simple to install, more durable than tile, less prone to leaks long term, lightweight etc, etc.. Yet tiles are so nice to look at. So it's all about priorities.

Whirly birds are not that good. They don't move significant volumes of air per unit - impossible to create a well ventilated roof without installing multiple units of them. Very bad aesthetically. But the long term leakage proofing is even bigger problem. The amount of air they "move" would depend on each unit's opening cross section. Their spinning action is just a marketing gimmick. It doesn't add any air velocity or create any additional suction. Their venting value equals to the similarly sized hole in the roof.

https://wave.co.th/product-category/ground-water-tanks/ https://dos.co.th/products?f[0]=field_categ%3A1 https://mitsubishi-kyw.co.th/Product/For-Home/Water-Pump/ConstantPressure/934.aspx?NodeID=934&ProductType=5 https://www.hitachi-homeappliances.com/th-en/products/water-pump/shallow-well-compact/wm-p250gx2.html

Take a look at the bore, or at whatever is surface visible. Most wells are pvc lined (blue pipe) but could be metal.

The best and easiest method by far is via an excavator. All other methods will require lots of effort and/or time: https://www.thespruce.com/removing-tree-stumps-without-stump-grinders-2131136

Make sure the bore is properly sealed with a concrete pad to prevent surface water contamination. A good sealing bore cap is also a good thing to have. They tend to just cover it with a plastic disk leaving visible gaps all around.

Total hardness, Chloride, dissolved solids and Coliform bacteria readings are elevated. But only Coliform bacteria contamination warns any concern. High bacteria levels could be from cross-contamination during sample collection/handling on your part. How deep is your well? Was the bore sealed/capped? How long has it been since its completion? What was your sample collection technique?

Yeah, pressure treatment makes the key difference in protecting the core material from termites. But it's still not a 100% protection. btw, even teak is not a guaranteed deterrent. It's just that termites don't like it nearly as much as other woods. There are many examples of termite damaged teak pieces in Thailand.

@stament Termites don't like pressure treated plywood. Laminated plywood cabinets look almost indistinguishable from solid wood.

There's a follow up video. in which he's admitted to mistakenly spreading misinformation. After conducting lots of research he was able to get the facts right.

@UWEB 150K is not unreasonable

???? Soft, rock free geological formations are normal for your area, but not for the multiple others. Why to even call those prices normal? The OP is unsure about pricing. Why to create an unnecessary confusion for him by calling things "normal"? There are no "normalized" water well prices for the whole of Thailand. The fixed pump and pipe prices are not relevant to the cost of the bore drilling process.

Sure, but then there's no such a thing as "normal price"...

Every site is different. Even difficult sites can be done in a full day if the driller has a skilled crew and powerful enough equipment.

More likely easily contaminated surface water.

It's paramount.

Prices depend on the area and local geology. No one will do a well for 30-50K in difficult areas.

Well, one thing for starters... It sounds like the OP has purchased used in the past but is only familiar with his home country used car market where used cars are sold at just a fraction of new prices. He's accustomed to the environment where a just sold new car automatically looses 20-30% of its book value the moment it's driven from the auto dealers lot. It's a completely different market over here with highly inflated (in comparison) used car prices.

Interesting isn't it? The 10-speed gear hunting problem has been largely resolved according to the countless reviews coming from the Australian market. In addition, in Thailand you can also get the proven 6-speed auto, but it's only available with the single turbo engine, which is still not a weak motor by any means.