Duro-Shield™ Silicone Roof Coating

Identification & Functionality

Chemical Family

Silicones

Product Type

1K (1 component) Coating

Technologies

Ready-to-Use Products

Product Families

Ready-to-Use Products — Paints & Coatings

Protective Coatings

Features & Benefits

Ready-to-Use Product Features

Breathable,

Durable,

Good Sealant Properties,

Good Weather Stability

Applications & Uses

Markets

Building & Construction

Applications

Building & Construction — Building Envelope & Roofing

Waterproofing & Weatherproofing

Application Method

Brush,

Roller,

Spray

Compatible Substrates & Surfaces

Concrete,

Elastomers & Rubbers,

Masonry,

Metal,

Plastics,

Polyvinyl Chloride (PVC),

Wood

Uses

Duro-Shield Silicone Roof Coating can be used on the following roof substrates, after surface preparations have been completed:

• Single-ply membranes:

1. Aged Duro-Last® PVC (polyvinyl chloride)
2. Other aged PVCs
3. EPDM (ethylene propylene diene monomer)
4. TPO (thermoplastic polyolefin)

• Mineral and granule-surfaced built up (BUR) and modified bitumen
• Smooth-surfaced built up (BUR) and modified bitumen
• Spray-applied polyurethane foam
• Aged galvanized metal
• Concrete
• Wood 

Installation

• General

1. Only apply product when the surface and ambient temperatures are between 35ºF (1°C) and 100ºF (37°C). Do not apply product when the ambient temperature is within 5º F of the dew point. Product should be stored between 50º F (10° C) and 80º F (26° C) for 24 hours prior to application.
2. Do not apply to concrete roofs that may be subject to vapor drive from conditioned spaces below.
3. Do not apply when rain, cold or nightfall are imminent.
4. Thinning the product is not allowed.
5. Open and partially full containers will skin over quickly. If this occurs, remove the skin and continue using the remaining product.
6. Use a brush, roller (1-inch nap, min.), or airless sprayer to apply. Best results are obtained when using an airless sprayer. Care should be taken when using an airless sprayer to apply DuroShield silicone products. Wind-blown over-spray may damage property adjacent to the project site.

• Substrate Preparation

1. Repair the substrate by following Substrate Preparation instructions within the Duro-Shield Silicone Roof Coating Installation Guide.

• Cleaning Procedures

1. Apply to surfaces which are clean, dry and free of oil, mildew, grease or any other contaminants. Follow Cleaning Procedures within the Duro-Shield Silicone Roof Coating Installation Guide.

• Seam Treatment

1. Repair all horizontal and vertical seams by following Seam Treatment instructions within the Duro-Shield Silicone Roof Coating Installation Guide.

• Priming

1. Follow Priming instructions within the DuroShield Silicone Roof Coating Installation Guide.

• Coating

1. Stir until an even consistency is achieved. A slow-speed drill with mixer attachment is recommended.
2. 5, 10, 15 and 20-year material warranties are available. Follow Coating instructions within the Duro-Shield Silicone Roof Coating Installation Guide for specific application guidelines regarding each warranty.

Cleanup

Uncured product may be removed with virgin mineral spirits. Do not use water. Application equipment should be cleaned immediately after use with virgin mineral spirits. Do not use water.

Properties

Color

Grey,

Tan,

White

Typical Properties

	Value	Units	Test Method / Conditions
Cure	2 - 4	hours per coat	-
Elongation (73.4°F)	207.0	%	ASTM D 2370/D 6694
Elongation (0°F)	266.0	%	ASTM D 2370/D 6694
Low Temperature Flexibility	Pass	-	ASTM D 522 Method B
Permeance	5.3	perms	ASTM E 96 Procedure B
Solids by Volume	94.0	%	ASTM D 2697
Solids by Weight	96.0	%	ASTM D 1644
Tear Resistance	22.0	lbf/in	ASTM D 624
Tensile Strength (73.4°F)	294.0	psi	ASTM D 2370/D 6694
Tensile Strength (0°F)	366.0	psi	ASTM D 2370/D 6694
Viscosity	47400.0	cps	ASTM D 2196
VOC Content	3.97	%	EPA 24
Weight	10.3	lb./gallon	ASTM D 1147

Technical Details & Test Data

Energy Efficiency

	CRRC ID	Solar Reflectance ASTM C 1549		Thermal Emittance ASTM C 1371		Solar Reflective Index (SRI) LEED
		Initial	3-yr	Initial	3-yr	Initial	3-yr
White	0610- 0021	0.79	0.68	0.9	0.9	99	83
Tan	P1	P1	P1	P1	P1	P1	P1
Gray	P1	P1	P1	P1	P1	P1	P1

P¹ - Results Pending.

Safety & Health

Precautions

• Read Safety Data Sheets (SDS) prior to using. SDS can be found on the Duro-Last website.
• Wear proper personal protective equipment, such as gloves and eye protection, per the SDS.
• Use only in well-ventilated areas and avoid breathing vapors.
• Keep container closed when not in use.
• Do not expose closed containers to extreme heat.
• Keep away from children.

Packaging & Availability

Packaging Type

Drums,

Pails

Ordering

Approximate coverage rate per gallon: 100 square feet at 16 wet mils.

• 5-gallon pail white (Item #4195)
• 55-gallon drum white (Item #4196)
• 5-gallon pail tan (Item #4195B)
• 55-gallon drum tan (Item #4196B)
• 5-gallon pail gray (Item #4195G)
• 55-gallon drum gray (Item #4196G)

Storage & Handling

Storage And Handling

• Store product tightly closed in a dry, cool and wellventilated place.
• Keep out of direct sunlight.
• Shelf life is two years in an unopened container, from date of manufacture printed on product, when following these recommended storage procedures.