DAP Weldwood Contact Cement

Description

Dap Weldwood Contact Cement is a premium quality, brush grade , neoprene-based cotact cement formula that meets the stringent requirements of the professional user. It has a fast drying formula that dries in 15-20 minutes. High strength and initial grab make it ideal for most prjects. Offers high heat and water resistance when dry. Exceeds industry performance requirements.

Extended Information

Surface Preparation & Application:

• PREPARATION: Prefit all parts before applying cement. Surfaces to be bonded must

be clean, dry and free of irregularities. Remove all paint, varnish, grease, oil, dust, sawdust
and other foreign materials. Roughen non-porous materials. Air and substrate temperatures
should be above 65°F.

APPLICATION: Stir cement thoroughly. Using a brush, short nap roller or notched spreader, apply one

uniform coat of cement to each surface to be bonded, working cement in one direction only.

• Let coated surfaces dry for 15 minutes. Dry time may vary with temperature, humidity and thickness of

coat applied. Properly coated surfaces feel tacky and appear glossy when dry. Test for dryness by pressing

kraft paper against adhesive surface. When dry, adhesive should bond slightly to, but not transfer to, the

kraft paper. Recoat any dull spots after first coat is dry. Two coats may be required on rough or porous

surfaces.

ASSEMBLY: Surfaces may be assembled up to 2 hours after cement is applied. If the cement is allowed to

dry more than 2 hours, reactivate it by applying another coat of cement and drying normally.

• Align surfaces into exact position and press together, moving from one end to the other to avoid bubbles.

Cement joins on contact, surfaces cannot be shifted. For large areas, use dowels to prevent surface contact

while positioning surfaces. Place dowels every 6 to 12 inches. Remove dowels as surfaces are pressed

together.

• Apply firm pressure to the entire area using a J-Roller (not over 3 inches wide) or a wood block and

hammer. Insufficient pressure may allow blisters or bubbles to form later. Work from the center to the

edges to avoid bubbles. Apply extra pressure to edges.

• Trimming or finishing operations can be performed immediately after bonding. Let adhesive assemblies

cure for at least 72 hours before exposure to direct sunlight or temperatures over 150°F.

• Should not be used for structural applications, or for bonding copper, copper alloys or Styrofoam. The

solvents in this cement may stain or damage painted surfaces, vinyls and some plastics. Test a small area

first before actual use. Not recommended for heavy gauge metal.

Open Time:  2 Hours

Coverage: 216 sq. ft./gallon (one side a pplication @ 3 dry grams per sq ft).

This is equivalent to 108 sq ft of bonded material.

Shelf Life: 1 Year, Minimum

Clean Up:

Tools and other equipment may be cleaned with DAP® WELDWOOD® Contact
Cement Cleaner and Thinner.