Mitten›Mulco® Professional Sealants

Mulco Sealants

Name: Exterior Pro Materials
Address: Unit 5, 1235 Journey's End Cir, Newmarket, ON, L3Y 8T7, CA
Telephone: +1 (905) 836-7272

Mulco® professional sealants by Mitten Building Products offer four climate-proven formulas for Canadian construction: Supra Expert thermoplastic (1,400% elongation, -40°C to 50°C service, 49 colour options), Latex 9000 acrylic latex (interior/exterior, tack-free in 6–10 minutes, CFIA approved), Butyl rubber (CGSB 19-GP-14M, PWF compatible), and Gutter Waterproof Sealant (thermoplastic, PVC + aluminum gutters, White and Clear). All supplied in 300 mL standard cartridges.

49 colours

Request a Quote Datasheet

Available Colours

Acadia

Standard

Standard(49)

Colours shown are approximate representations only and may appear differently on screen than the actual product. Request a physical sample before making your final decision.

About Mulco Sealants

Mulco® professional sealants are a family of four high-performance construction sealants distributed by Mitten Building Products, engineered for Canadian climate conditions. The range includes Supra Expert — a thermoplastic sealant with industry-leading 1,400% elongation for exterior professional applications; Latex 9000 — an acrylic polyurethane latex sealant suitable for both interior and exterior use with low VOC (37.3 g/L) and paintable in 1 hour; Butyl — a butyl rubber sealant rated to CGSB 19-GP-14M for exterior use down to -20°C; and Gutter Waterproof Sealant — a thermoplastic adhesive designed specifically to seal PVC and aluminum gutter joints. All products are available in 300 mL cartridges compatible with standard caulking guns. Supra Expert and Latex 9000 are available in 49 colour-match options to coordinate with Mitten and Kaycan siding profiles. Gutter Waterproof Sealant is available in White and Clear.

Available at Pro Materials in Newmarket, Ontario, supplying contractors, builders, and homeowners across York Region, the GTA, and Ontario. All products are available on a quote basis; contact us for wholesale pricing and current availability.

Profiles & Specifications

104 XX0Supra Expert

One-part thermoplastic sealant formulated for exterior professional use. Achieves 1,400% elongation (ASTM D-412) and a tensile strength of 3 MPa (435 psi) with a Shore A hardness of 40. Serviceable from -40°C to 50°C (-40°F to 122°F) and can be applied to surfaces as cold as -30°C (-22°F). Non-silicone formula — fully paintable after 24 hours. Bonds to aluminum, glass, concrete, masonry, and most building materials without primer. Suitable for expansion joints, perimeter sealing, windows, doors, and metal flashing. Surpasses CGSB standards. Available in 49 colours.

Product Type	One-part thermoplastic sealant
Use	Exterior only — professional grade
Elongation	1,400% (ASTM D-412)
Tensile Strength	3 MPa (435 psi)
Shore A Hardness	40
Service Temperature	-40°C to 50°C (-40°F to 122°F)
Min. Apply Temp (Surface)	-30°C (-22°F)
Min. Apply Temp (Product)	5°C (41°F)
Density	0.98 kg/L
Viscosity	1,000,000 CPS
Paintable	Yes — after 24 hours
UV Resistance	Excellent (ASTM C-793)
Adhesion — Aluminum	8.1 KN/m
Adhesion — Glass	7.4 KN/m
Adhesion — Concrete	7.9 KN/m
Joint Size	6mm to 16mm
No Silicone	Yes — non-silicone formula
Standard	Surpasses CGSB standards
WHMIS (Canada)	B4 — Combustible Liquid · D2A — Very Toxic
Shelf Life	3 years
Available Colours	49 colours — full siding colour match range

$Mulco Sealants - Latex 9000 profile$

137 XX0Latex 9000

High-performance acrylic polyurethane latex sealant for interior and exterior applications. Achieves 800% elongation and Shore A hardness of 25. Tack-free in 6–10 minutes and paintable after just 1 hour. Low VOC (37.3 g/L) with no toxic odour — safe for indoor use. Contains fungicide for mould resistance. Rain resistant after 12 hours. Canadian Food Inspection Agency approved for dry food contact (when cured). WHMIS not regulated. Available in multiple colours to match siding and trim.

Product Type	Acrylic polyurethane latex sealant
Use	Interior and exterior
Elongation	800%
Shore A Hardness	25
Service Temperature	-20°C to 50°C (-4°F to 122°F)
Tack-Free Time	6–10 minutes
Paintable	Yes — after 1 hour
VOC Content	3.3% / 37.3 g/L
Flammability	Non-flammable at application
Fungicide	Yes — mould-resistant formula
Rain Resistant	12 hours after application
Food Contact	Canadian Food Inspection Agency approved (dry, cured)
WHMIS (Canada)	Not regulated
Shelf Life	3 years

124 XX0Butyl

Professional-grade butyl rubber sealant for exterior use. Remains flexible and adherent from -30°C to 50°C (-22°F to 122°F) and can be applied to surfaces as cold as -20°C. Accommodates joint movement of ±15%. Compatible with pressure-treated wood framing (PWF). Meets CGSB 19-GP-14M standard. Paintable after 24 hours. Ideal for rough and porous surfaces where other sealants may fail. Flammable — handle with proper ventilation.

Product Type	Butyl rubber sealant
Use	Exterior only
Service Temperature	-30°C to 50°C (-22°F to 122°F)
Application Temp	-20°C to 30°C (-4°F to 86°F)
Joint Movement	±15%
PWF Compatible	Yes — pressure-treated wood framing
Paintable	Yes — after 24 hours
Standard	CGSB 19-GP-14M
Flammability	Flammable — adequate ventilation required
Shelf Life	2 years

150 XX0Gutter Waterproof Sealant

Thermoplastic waterproof sealant engineered specifically for sealing joints in PVC and aluminum gutters and eavestrough systems. Bonds on both dry and damp surfaces. Serviceable from -30°C to 50°C (-22°F to 122°F). Each cartridge covers 2–10 joints depending on gutter size and type. Sticks on contact — no clamping or drying time required before rain. Available in White and Clear to match standard gutter colours.

Product Type	Thermoplastic waterproofing sealant
Use	Exterior only — PVC and aluminum gutters/eavestroughs
Service Temperature	-30°C to 50°C (-22°F to 122°F)
Application Surface	Dry or damp — sticks on contact
Coverage	2–10 joints per 300 mL cartridge (depends on gutter type)
Available Colours	White · Clear
Shelf Life	2 years

Specifications

Product Comparison

Property	Supra Expert	Latex 9000	Butyl
Product Type	Thermoplastic	Acrylic polyurethane latex	Butyl rubber
Use	Exterior only	Interior + exterior	Exterior only
Elongation	1,400% (ASTM D-412)	800%	—
Shore A Hardness	40	25	—
Tensile Strength	3 MPa (435 psi)	—	—
Service Temp	-40°C to 50°C	-20°C to 50°C	-30°C to 50°C
Min. Apply Temp	-30°C (surface)	—	-20°C
Tack-Free / Paintable	Paintable after 24hr	Tack-free 6–10 min, paint 1hr	Paintable after 24hr
VOC Content	—	37.3 g/L	—
WHMIS	B4, D2A	Not regulated	Flammable
Standard	Surpasses CGSB	CFIA approved (dry)	CGSB 19-GP-14M
Shelf Life	3 years	3 years	2 years

Source: Mulco Technical Data Sheets — distributed by Mitten Building Products.

Supra Expert — Adhesion Strength

Substrate	Adhesion Value
Aluminum	8.1 KN/m
Glass	7.4 KN/m
Concrete	7.9 KN/m

Adhesion measured per standard adhesion test protocols.

Gutter Waterproof Sealant — Coverage

Gutter Type	Joint Coverage per Cartridge
PVC / Vinyl Gutters	Up to 10 joints
Aluminum Gutters	2–6 joints (depends on joint size)
Available Colours	White · Clear
Service Temperature	-30°C to 50°C (-22°F to 122°F)

Always clean and dry (or slightly damp) gutter joint surfaces before applying.

Order quantities and lead times may vary. Contact us for availability.

Application Guide

SURFACE PREPARATION (ALL PRODUCTS) — Surfaces must be free from dust, oil, grease, rust, loose paint, frost, and any substance that may inhibit adhesion. For best results, apply to clean, dry surfaces. Supra Expert may be applied to surfaces as cold as -30°C. Latex 9000 may be applied on damp surfaces. Gutter Waterproof Sealant adheres on both dry and damp gutter joints.
SUPRA EXPERT — APPLICATION — Load cartridge into a caulking gun. Cut nozzle tip at a 45° angle to suit joint width. Apply in a continuous bead, filling the joint from the bottom up. Tool the surface immediately after application to ensure full contact with joint faces. Paintable after 24 hours with latex or oil-based paint. Do not apply to joints smaller than 6mm or larger than 16mm without a backer rod.
SUPRA EXPERT — LIMITATIONS — Exterior use only. Product must be at minimum 5°C (41°F) at time of application even though surfaces can be as cold as -30°C. Contains solvent — provide adequate ventilation. Keep away from heat, sparks, and open flame. WHMIS: B4 (Combustible), D2A (Very Toxic). Keep out of reach of children.
LATEX 9000 — APPLICATION — Apply directly from cartridge with a standard caulking gun. Smooth with a wet finger or tool immediately after application. Clean excess with water before curing. Paintable after 1 hour with latex paint. Allow 12 hours before rain exposure. Fungicide-treated formula resists mould growth in high-humidity environments. Safe for dry food contact surfaces when fully cured (CFIA approved).
LATEX 9000 — LIMITATIONS — Not recommended below -5°C during application. Do not use in continuously wet or submerged applications. WHMIS not regulated. Latex formula — no solvent odour, suitable for interior use.
BUTYL — APPLICATION — Apply with a standard caulking gun in continuous bead to clean, dry surfaces. Can be used at temperatures as low as -20°C. Fill joint completely and smooth with a dry tool or solvent-dampened cloth. Paintable after 24 hours. Use backer rod when joint depth exceeds 12mm.
BUTYL — LIMITATIONS — Exterior use only. Flammable — keep away from heat, open flame, and sparks. Provides ±15% joint movement accommodation. Compatible with pressure-treated wood framing (PWF). Meets CGSB 19-GP-14M.
GUTTER WATERPROOF SEALANT — APPLICATION — Clean gutter joint area of dirt, debris, and standing water if possible (damp surface is acceptable). Insert cartridge into caulking gun and cut nozzle to the appropriate size. Apply sealant directly into the joint overlap area and press sections firmly together. The sealant bonds on contact and provides immediate waterproofing. Available in White and Clear to match standard eavestrough colours.
GUTTER WATERPROOF SEALANT — LIMITATIONS — For use on PVC and aluminum gutters and eavestroughs only. Not intended for other substrates. Service temperature -30°C to 50°C (-22°F to 122°F). Shelf life 2 years from date of manufacture.
CLEAN-UP & STORAGE — Clean tools before curing with mineral spirits (solvent-based products) or water (Latex 9000). Store cartridges upright in a cool, dry location away from direct sunlight and extreme temperatures. Replace end caps after use to prevent skinning.