I have some walls in our property and it is one hell of a job to put pipes through.

The convitex was used on the roofs at Bermuda Palms - then concrete was poured over it. Building A had a lot of leaks that took years to identify and fix. It supposedly is good for sound proofing and insulating.

Thanks again everybody , lots of great info . They've started to use the panels here in Costa Rica for the R value , I guess I'll cross that bridge when it's time.
FILL ??? is that a dirty word there or just very expensive I'm guessing ??
Have agreat week
Thanks
Terry

Covintec panels were first used in San Pedro in the Mata Rocks building. They are also used in Coconuts, Cory McDermott residence, Royal Palms, Tennis Club, Ozzie Palmer residence and various others. After Keith it became apparent that they were "hurricane proof" and many started replacing destroyed wood roofs for Covintec roof, Banyan Bay for example has all panel roofs now and many others. Most constructions are residential. Defects are caused by unskilled labor in the installation phase and masonry mistakes in the concrete phase. Not all have been properly trained in factory approved techniques.
right now I can build a modest Covintec home elevated 8', tiled, insulated, hurricane proof, fire proof house for around $100 USD /s.f. in town. I have just completed design on a such a home and will be starting construction soon. Covintec system is superior to block construction in every respect. Typically we will complete a Covintec building in 1/2 to 2/3 the time of block construction and have a finished product of much higher quality in every respect.
As the walls are very robust it is difficult to retro fit in the wall plumbing and electrical which should be installed before plastering.
There are several large Covintec walls around. One is just north of Marina's where the Golf Cart place is. that's an 8' wall and really blocks noise and provides great security.

Covintec is a great product,specially for insulation. They are easy to work with because they are square large panels. Block is cheaper if you have the right crew or someone there to watch over the productivity.
Sometimes it is easier to have a crew use a material they are more familiar with like block. The perfect house would have both,they both have their pro's and cons. If you run air conditioning a lot you should definitely consider covintec.
T beams Concrete t beams with styrofoam inserts are a way to speed up a project and provide insulation for roofs and floors. I would consider all theses products,there are risks with all products. It is best to have a quality control person and a productivity person,this is sometimes considered the contractor,we suggest an independent one that is paid separately from the crew. This could be one person with a strong back bone.
Building per square foot $ is going to depend on how many time you have to do the same project or waste of product.

We actually bought a house (4 miles South) that was built by Mike Campbell(whom we've never met) The house is aprox. 19 years old. This Covintec house has never leaked or cracked and the workmanship is wonderful. We would highly recommened Mike Campbell and this application to anyone considering it.
P.S.
Mike, we would like to meet with you to discuss a possible second floor bedroom and bath. We'll be back in April.
Ric and Kathy

Well thats nice to hear for sure. When properly used Covintec is unbeatable and represents the state of the art in construction. Glad you enjoy your house. Until you have lived in a Covintec home you dont realize the difference.

Mike Cambell & others.

We have covered the outside with 1/2" plywood with tar paper over the top which will have wire then plaster.

I have poured concrete beams 8' apart (well most of them - LOL) with sapodilla real 2 x 4' top & bottom plates and studs 24" on center.

I have been advised to NOT use plasterboard on my inside walls.
Would it be better to use convitex rather than plywood for interior walls. If I used convitex the pieces could be used between the studs and then just be plastered over - right?

I know the insulating advantage but what would be the difference in cost?

Usually exterior walls have studs every 16 inches rather than 24". The Covintec system would have been used in place of wood studs. The panels would have been attached to the existing beams, columns and floor and been plastered both sides and done. The plaster over wire walls you have described require an interior wall and i would use sheetrock as always with insulation placed between the studs.
I dont think you would gain anything by cutting Covintec panel and putting it between studs. That is all said without looking at the existing construction. In all cases except Covintec you will finish the exterior including the roof before you finish the interior walls and they are supposed to be water tight.
With the Covintec system we can plaster the interior walls and ceiling to finish before we cast the roof as the plasterwork acts as formwork and no plywood is required for the roof/second floor casting.

I completely agree with Seashell.