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Weldwood Original Contact Cement vs PL400 Subfloor & Deck Construction Adhesive

Compare cure times, application limits, and real-conditions performance for DAP's Weldwood Original Contact Cement and Loctite's PL400 Subfloor & Deck Construction Adhesive. Adjust the sliders below for your actual temperature and humidity.

SpecificationContact CementConstruction Adhesive
ManufacturerDAPLoctite
Full cure (lab)168h168h
Open time120 min★15 min
Min application temp65°F★0°F
Max application temp★120°F100°F
Safety flagsNoneNone

Compare at Your Conditions

70°F
10°F120°F
50%
0%100%

Which should you choose?

Weldwood Original Contact Cement has a 168h full cure time with a 120-minute open time.

PL400 Subfloor & Deck Construction Adhesive has a 168h full cure time with a 15-minute open time.

These products serve different purposes — check each product's individual page for full substrate compatibility details before deciding.

Weldwood Original Contact Cement

DAP

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PL400 Subfloor & Deck Construction Adhesive

Loctite

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Weldwood Original Contact Cement data from manufacturer TDS · last verified May 2026.

PL400 Subfloor & Deck Construction Adhesive data from manufacturer TDS · last verified May 2026.

Browse all contact cement products.

Important: Results are estimates only. Always follow manufacturer instructions. Not suitable for structural, load-bearing, or safety-critical applications.