Universal Silicone
Universal Silicone is an exterior or interior multipurpose, one-part moisture curing silicone sealant, used around door and window frames, sidings, and glass in window frames.
Universal Silicone is a silicone sealant from Mulco. Mulco lists it for seals joints around door frames, window frames, siding. The Mulco data sheet linked below gives conflicting application temperature ranges; confirm the intended range with Mulco before cold- or hot-weather use. Cranco carries it, and which counter has it on the day changes, so ask at the counter.
Universal Silicone is Mulco's one-part moisture-curing silicone for joints around door frames, window frames, siding and glass that move. It meets ASTM C920 Type S Grade NS Use NT, G, O, skins in 10 to 15 minutes, cures through in 24 hours at room temperature, and reaches full cure inside a week.
Mulco gives a cured-service temperature range of -57 to 204 °C. Cranco carries Mulco at Concord, Barrie and Mississauga. Call the branch to confirm the colour and size in stock, and the price.
FEATURES AND BENEFITS
- Silicone sealant.
- Multi-purpose.
- For interior and exterior use.
- Easy to apply on a variety of surfaces including ceramic and fibreglass.
- Excellent elasticity.
- Resists sagging.
- Cured sealant is mold and mildew resistant.
What is Mulco Universal Silicone used for?
Joints around door frames, window frames, siding and glass that are subject to movement, inside or out. Mulco says it adheres to and seals ceramic, glass, most metals, painted wood, most fibreglass and certain plastics.
Is Mulco Universal Silicone paintable?
No. Mulco's application paragraph ends with the instruction in capitals: DO NOT PAINT. Where the joint has to take paint afterwards, Mulco Supra Expert and Mulco Supra Elite are the ones Mulco's own sheets clear for it. Mulco's thermoplastic and hybrid sealants
How fast does Mulco Universal Silicone set?
The surface skins in 10 to 15 minutes at 21 °C and 50% relative humidity, the silicone cures at 24 hours at room temperature, and full cure comes in under a week. Mulco's own application paragraph puts full cure at 7 days.
How cold can you apply Mulco Universal Silicone?
The Mulco data sheet linked below gives -37 to 65 °C in its application-temperature specification and application instructions, but -20 to 50 °C in Features/Benefits. Confirm the intended application range with Mulco before using either extreme. The separately stated cured-service range is -57 to 204 °C.
What colours and sizes does Mulco Universal Silicone come in?
Clear and white, both in a 300 mL tube. Mulco puts the coverage at 8 metres with a 7 mm bead. The VOC content is under 23 g/L by ASTM D2369.
Where can you buy Mulco Universal Silicone?
At Cranco's counters in Concord, Barrie and Mississauga. The addresses, phone numbers and hours are further down this page.
Limitations from Mulco
Do not apply on bare metal subject to rusting. Do not use on areas where asphalt was previously applied. Not intended for joints that will be submerged or exposed to abrasion (foot traffic).
Branches
Call the branch to confirm what it has in stock today, and the price.
Colours
Mulco publishes a colour range for this product.
Call the branch for the colour you need.
Data sheet
- Mulco Universal Silicone data sheet Mulco (PPG), PDF, edition of 02/2025