Mapeflex PU40


One component thixotropic polyurethane, flexible sealant with a low modulus of elasticity. Used to seal expansion and distribution joints on internal and external horizontal and vertical surfaces subject to movement. Bonds well to concrete and natural stone substrates.

General information

Uniclass 2015

Pr_30_31_76_65 Polyurethane (PUR) construction joint sealantsPrimary


E40/530 Sealant

M21/530 Sealant joints

Specification data - Polyurethane (PUR) construction joint sealants

Product Reference

Mapeflex PU40


Not required

Primer AS

Recommended on dusty surfaces.

Primer M

Recommended to improve bonding.


Sustainability Brochure

Sustainability Brochure

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