huey1

Sun Aug 07, 2005 10:17 pm

Who knows what is the best method for resealing a fiberglass roof. I was told Elastomeric, but there was also a less expensive alternative. Any suggestions?

Thanks.

Master

Sun Aug 07, 2005 10:50 pm

Can you describe the elastomeric system in detail? Is it a fiberglass roof because you want light to permeate it to say...plants inside? Like a greenhouse, or does in not matter if light gets through?

huey1

Mon Aug 08, 2005 12:07 pm

When we had our home inspection done on a house we plan to flip, we were told that the front roof needed to be resealed. Were told that it is fiberglass, it's been previously sealed with black sealer, and it's abot 10'x20'.

We were told that there was a less expensive alternative to the elastomeric, but couldn't find it at Home Depot, and when I asked, they were about useless.

Any suggestions?

Thanks

Master

Mon Aug 08, 2005 11:33 pm

Is it a hard plastic-like fiberglass and resin, or more like a flat roof with fiberglass reinforcement. What color is it? Is it flat?

huey1

Tue Aug 09, 2005 8:26 pm

The roof is flat, rolled fiberglass. It's been prevously sealed, and it's black. Some of the roof is starting to show through, and I was told to re-seal it. I was told that it's a roll on process with the elastomeric sealer, but was also told to clean the roof first, then use a primer.

What would I use to clean the roof, and would you recommend using the elastomeric, or an alternative. I don't want to spend a fortune, but I also want to do it right the first time.

Thanks.

Master

Wed Aug 10, 2005 1:03 am

Typically, in my area, under the right conditions, we can perform complete elastomeric acrylic roof restorations over smooth surfaces BUR (tar and fiberglass or felt) for around 2.00 to 2.50 a foot. This is with a pressure wash, seam reinforcement coupled with minimum of two layers of a thicker, more resilient flashing grade material, and 3 gallons per one hundred square feet of the elastomeric acrylic SPRAYABLE membrane. Roller-applying this coating system is NOT good. We have rolled it on various smaller repair items, and the stuff is tacking as you roll it, and as a result, the roller is pulling up the previous pass as you roll overlapping strokes. It is infinitely better to use an airless sprayer for these systems. At 3 gal/sqaure, you will end up with a thin film of about 26 dry mil in the field.

If you want an even better, stronger, abrasion resistant, UV stable elastomer, then go to poly urea. This stuff has been enhanced weather tested to a fifteen year rating with no dis-adhesion and ZERO changes in the physical properties of the membrane (no deterioration observed). It is 100% solids so you dont have any VOC's to flash off or water to cure out, and is not succeptible to delamination or failure due to standing water. Chemical and abrasion resistant. At three gallons per 100 square feet, you will end up with approximately 48 dry mil over the field as well as penetrations. I can install this system for you around three bucks a foot.

Master

Sun Aug 14, 2005 5:43 pm

Here are some samples I took pictures of. This is a STRONG monolithic industrial grade coating used for anything from Navy ship preservation to food service and sanitation to roofing to trafficable decks, and pedestrian walkways by retarding the cure and broadcasting a surfacing agent to make it non slip. Underground tank linings are being coated as well as sewer systems for its elongation, chemical resistance and general durability. Different formulations are produced for different applications. Some formulations are used for its enhanced slip qualities to aid in material handling.

http://photobucket.com/albums/v446/Masterscurlock32/POLYUREA/

SYS

Sun Aug 14, 2005 6:03 pm

"but there was also a less expensive alternative" "we plan to flip"
"We were told that there was a less expensive alternative to the elastomeric"
"I don't want to spend a fortune"

So you are going to sell the house and don't really care is what all this says to me. Let the next person deal with it!

It is recomended that you put a primer over the black before you put Silver or White on. There is silver roof coating, a black fibered, and white elastomeric roof coat. The white elastomeric has energy save features with it saves on the utility bills, and has a longer warranty. Home Depot here in Missouri carries Henry, Lowes carries Kool Seal. I prefer Kool Seal over Henry I believe it is a superior product, however it is about $2.00 more per bucket than Henry. There is about a $30.00 per bucket difference in price from the Silver and White, about a $7.00 per bucket difference in price from the black to the silver. So if you decide to let the next guy deal with it and take the cheapest way out go with the Black fibered Henry. Or if you want to do the right thing and give the next owner what they are paying you for go with the Kool Seal Elastomeric. This answer is based on the information you have provided if your information is incorrect the answers to your questions will reflect that.

Master

Sun Aug 14, 2005 6:10 pm

YEs, the white elastomericacrylics will generally bleed through most whites, but GAF makes a Topcoat product MB Plus that is formulated to resist the bleed. It offers all the high energy eficiencies as the others, has a higher solids content and can be warranted for up to fifteen years, and is a renewable warranty when installed by a certified system applicator such as myself. There is much more to this system than simply spraying the white in order to obtain the warranties.

I can do the polyurea at the same cost and give you an infinitely better membrane.

SYS

Sun Aug 14, 2005 7:21 pm

We put Elastomeric on with Paint rollers. What do you use to spray it on with?

Master

Sun Aug 14, 2005 7:33 pm

We do not roll the elasto because it is tacking up while you roll, pulling the previous stroke up with your roller. Sprayed on is much better, easier, faster, more accurate for applying your wet mil thickness to acheive the proper dry mil thickness, and more labor-efficient.

I use the GRACO 7900 roof rig with 250 feet of hose....100' 1/2, 100' 3/8", and 50 feet of 1/4" with a 1/4" whip. The graduated hoses help to maintain steady 2500-3000 psi over the long hose length.

http://photobucket.com/albums/v446/Masterscurlock32/GAF%20Topcoat%20Restorations/

SYS

Mon Aug 15, 2005 6:56 pm

That job looks awesome. I see the difference in rolling vs spraying. We usually only put elasto on mobile homes. Most jobs of the size you posted there we use roll roofing or shingles on. I can't help but think how much fun it is to spray it on. Reminds me of this one roof I got to play Mario Sunshine on You know the leaf blower things, they dry out water pretty good.

Master

Mon Aug 15, 2005 10:15 pm

hAD THE CUSTOMER WANTED A TEAR OFF AND REPLACEMENT, WE WERE LOOKING AT OVER 100, 00.00, SHUTTING DOWN THE HAMMERS CAUSING MORE COST (THIS IS A DROP FORGE FACILITY), WHICH IS THEIR MONEYMAKER. iT WAS HIGH UP, BIG AND DANGEROUS AND HAS A GYPSUM ROOF DECK WITH GYP NAILS. hAVE YOU EVER TORN OFF GYP NAILS? THEY LEAVE BIG AZZ HOLES WHERE THE FASTENER WAS, AND EVERY ONE OF THEM HAS TO BE PATCHED. i WAS ALL FOR IT, BUT IT WAS TOO MUCH FOR THEM. SO THEY GOT THE TEMPORARY SOLUTION.

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