I used a Lanco product last time. It seems ok, no ceiling or roof issues. But as this is an extremely important part of keeping rain out of the house I was wondering what the best product might be thats avaliable here in POP. thanks Phil
I used the same stuff. Lanco has two or three different types of sealer. We used the best grade they have, which I think is called Ultraseal.
The trick with sealing the roof effectively with Lanco or any other sealing product is to make sure the surface is clean and dry.
We pressured cleaned our entire roof, which took us about 3 days due to the size, then let it dry for a week before applying the sealer.
I used the Lanco stuff, it failed badly and quickly. The only way (other than tar paper) is epoxy paint. The only requirement is that the roof is sound without moving cracks. I have experience with roofs that were previously coated with membranes and sealers, etc. all failed.
Try the 2 part epoxy sold here and wear disposable plastic gloves... couse the pait does not come off easily.
Its a fun job
carib
Just a note to say that for those still building, PREVENTION is the best cure.
Dominicans like to pour the roof then walk away from it for at least a week.
This is wrong.
The fresh concrete roof should be kept moist for at least 7 days, this will add to the strength and the waterproofing of the concrete....
True too. White cement paste (without adding any sand) is being used to waterproof pools too (when applying tiles). It helps to use an elastomere liquid mixed in or entirely replacing the water (plastic-cement) for longevity, flexibility and resistance to water.If the roof is untreated cement, meaning there is no paint or other product, covering the surface, then there is a reasonable and cheap method of waterproof the surface. Use white cement. Mix the cement with water to form a viscous liquid that can be applied by brush, usually an old broom, or you can use a paint roller.
Don't waste your money and your time using paints or other products I did every thing on my roof and finaly I got the problem solve when installed a "lona asfaltica".
Reason in DR we have hundreds of small quakes every year and the flexibility of the lona don't let it break.
It is a little bit expensive but worthy and need maintenance so this way you keep the twenty years guaranty.
JJ
Actually, it would seem that it is reinforced with loose fibers only (not mats). That's good. I however prefer to use the "normal" stuff but apply a synthetic mesh mat in between coats. Most of the sealer will become "one" with the mat, so that if MINOR/normal cracks or fissures occur in the concrete underneath, the finish will less likely crack along with it.Now that's a great looking product.
Reinforced with fiberglass mats.
Thanks
I used the same stuff. Lanco has two or three different types of sealer. We used the best grade they have, which I think is called Ultraseal.
The trick with sealing the roof effectively with Lanco or any other sealing product is to make sure the surface is clean and dry.
We pressured cleaned our entire roof, which took us about 3 days due to the size, then let it dry for a week before applying the sealer.