Frequently asked questions

887 Tropi-Cool® 100% Silicone White Roof Coating

Do I need to prime the roof before coating it with 887?

Apply a test area of coating over the existing membrane to verify absence of bleed‐through and proper adhesion to membrane prior to start of application.

What type of substrates can this product be applied over?

Aged asphalt roofs, including Built‐Up Roofing (BUR) and Modified Bitumen (MB); Aged single‐ply and rubber roofs, including TPO, EPDM, PVC, and Hypalon® roofs; Aged fiberglass roofs; Spray Polyurethane Foam (SPF) roofs; Metal roofs; Concrete roofs; Re-coating previously coated roofs; RV, trailer, and mobile home roofs

What is the shelf life once opened?

Henry 887 is a moisture cure product that starts curing from pulling water molecules out of the air as soon as the bucket or can is opened. If you don’t use all the material it can form a skin on the top that can be peeled back and re-used but if it is more than a day or two the material left in the entire bucket may cure and become hard.

What is the warranty on this product?

Lifetime limited warranty

687 100% Acrylic Enviro-White Extreme Elastomeric Roof Coating

What type of substrate can this be applied on?

Previously coated roofs, metal roofs, aged asphalt roofs, including Built-Up Roofing (BUR) and Modified Bitumen (MB)

How long does it need to cure before rain?

Acrylic reflective roof coatings need at least 48 hours to cure depending on the humidity. The higher the humidity the longer the drying time.

Can I use a sprayer to apply the product?

You can apply with a heavy-duty sprayer.

Do I need a base coat?

A base coat is optional. If a base coat is desired, apply Henry 107 asphalt emulsion sealer and dampproofer at a rate of 3-4 gallons per 100 square feet. Emulsion base coat must be fully cured before applying Henry Enviro-White 687 coating, usually in 3-7 good drying days.

Is this a two-coat application?

Yes, we recommend two coats. Apply your second coat when the first coat is dry, preferably on the same day. Allow to dry fully between coats. Apply second coat at the right angles to the first coat.

587 100% Acrylic Dura-Brite White Elastomeric Roof Coating

What type of substrate can this be applied on?

Previously coated roofs, metal roofs, aged asphalt roofs, including Built-Up Roofing (BUR) and Modified Bitumen (MB)

Can tint be added to this product?

It is not recommended to tint any of our acrylic roof coatings as they may affect the curing process and it would void the warranty.

How long does it need to cure before the rain?

Do not apply Henry 587 if you expect rain within 12 hours.

Can this be used on my RV rubber roof?

No. We do not recommend this application.

Will this product stick to metal roofing?

Yes, however appropriate preparation should be followed. Ensure a clean metal roof and remove rust by wire brushing prior to installation of Henry 587.

287 Solar-Flex® White Elastomeric Roof Coating

Does this product seal the roof from leaks?

This product is intended as a white elastomeric roof coating used for roof coating and UV reflectance. Appropriate leak repair products should be used to address roof leaks.

Can this product be applied over asphalt shingles?

No, this product is not recommended over shingles of any kind.

What sprayer can be used to apply this product?

It can be applied with a heavy-duty sprayer.

Can this product be tinted?

It is not recommended to tint any of our acrylic roof coatings as they may affect the curing process and it would void the warranty.

Henry® 212 All Purpose Crystal Clear Sealant

Can this product be painted?

This product is not paintable.

Can this be applied on EPDM rubber?

No. We do not recommend using Henry 212 on EPDM, new or aged.

Is it safe to use this product indoors?

No. This product is not intended for indoor use.

Can I apply this in the winter?

The minimum application temperature is 32 degrees Fahrenheit. Service temperature is -40 to 180 degrees Fahrenheit

What is the warranty on this product?

12 month limited warranty

Henry® 900 Flashing and Construction Sealant – Gray

Can this be used to re-glue the failed seam on a rubber roof?

Yes. Apply Henry 900 in the seam, weight it down with something and give it 24 hours to cure.

Would this work to seal rubber flashing to a metal roof?

Henry 900 is a great product to adhere or seal two dissimilar surfaces together.

What is the cure time?

Initial set is 60-90 minutes at 77 degree F for 1/8” bead. Full set is 24 hours.

Is there an expiration date?

Shelf life of 12 months from date of manufacture, when stored unopen and below 80 degree F.

Can this seal metal to metal?


Can this be used to make repairs to gutters?


Can this product be exposed on the top of a roof without drying out and cracking?


Henry® 884 Tropi-Cool® 100% Silicone Roof Sealant

Will 884 bond to 887?


How much coverage will I get out of one tube?

32 linear feet using a 3/8" bead

Can this be used to seal a gutter?


Will this work on an EPDM rubber roof?

Yes. However, additional prep and adhesion testing may be required.

How long does it take this product to cure?

Product will be tack free in 1 to 2 hours and fully cured near 48 hours (dependent on weather conditions, such as temperature and humidity)

Can this product be applied to windows and doors?

We recommend you follow the TDS and use it as intended as a roof sealant.

Is this product paintable?


Henry® R-Tech® Rigid Foam Insulation

Which way does the metallic side of R-Tech face?

The metallic facer on R-Tech may provide additional R-Value if it is facing a dead air space of ¾˝ or more. If there is no dead air space, it does not matter which way the metallic side is facing.

What is the R-Value of R-Tech?

R-Tech has an average R-Value of about 3.9 per inch.

Can R-Tech go directly under drywall?

Yes, drywall is a common finish material that can be applied directly over R-Tech.

What type of adhesives and tapes work with R-Tech?

Water based, urethane and polyether adhesives work best. Tapes used in weather resistive barrier applications are typically compatible with R-Tech.

What type of paints are compatible with R-Tech?

Quality latex paints and primers should be used for best results.

Can R-Tech be an air barrier, vapor barrier, semi vapor barrier, water resistant barrier, weather resistant barrier, radon barrier, moisture barrier, vapor retarder?

R-Tech by nature is an air barrier and with the seams taped it becomes a vapor retarder. R-Tech is also a moisture barrier as it is hydrophobic and is a weather resistive barrier when joints are taped with appropriate products.

Is R-Tech rated for blocking sound?

No, R-Tech does little for sound deadening.

What is the best way to cut R-Tech?

You can use an insulation knife, razor knife, or any other specialty foam knives or foam saw blades.

How can R-Tech be fastened to a wall?

You can use cap screws, cap nails, adhesives, or min. 1˝- wide staples to fasten R-Tech to the wall.

Will R-Tech poison my animals if used inside my house?

No, R-Tech is non-toxic to animals inside the home.

Can R-Tech be used in a basement or attic (interior)?

Yes, R-Tech is a great interior insulation solution for both the basement and attic. Local building codes should be reviewed prior to installation.

Can R-Tech be left exposed?

It depends on the application, R-Tech can be left exposed in an attic or crawlspace type of application. Local building codes should be reviewed for exposed interior applications. If it is an exterior application, R-Tech should be covered with some sort of finishing material.