To securely join the porous hard concrete with the non porous often flexible plastic use an epoxy glue that s ideally suited for work with both.
Gluing pvc trim to concrete.
Attaching baseboard trim with glue rather than nailing it to the concrete substrate prevents the possibility of splitting or splintering the trim when driving fasteners into the concrete.
Product may foam slightly.
A polyurethane glue which is perfect for use where a waterproof bond is required e g.
This should be a place where part of the plastic item can.
Press the plastic against the cement and find a good location to seat it.
6 recommended products for sticking plastic to cement concrete brick 6 results.
If it s between 60 and 80 degrees leave a 1 16 in.
I either do like has been previously suggested and attach a nailer with tapcons in the mortar joints if possible then nail the trim boards or if it is small and light enough i will glue it.
As a general rule of thumb if you re installing trim in temps higher than 80 degrees f go ahead and fit joints tightly.
I have never had any luck nailing straight to masonry.
Step 1 fit the plastic to the cement in preparation for gluing.
I really like loctites pl premium polyurethane.
Use for a rigid bond.
I usually end up with cracking or blowouts in the wall.