How To Penetrate A Concrete Block Wall With Conduit

The coatings sufficiently fill block pores small cracks and irregularities.

How to penetrate a concrete block wall with conduit.

Use a chisel or a drill equipped with a masonry bit to carefully remove some of the surrounding wall near the pipe. 1 clean surface of pipe to make sure it is free from dirt dust oils etc. Once the foam has cured we apply a layer of roof cement to the outside of the wall. Core drills are expensive tools and not something that the.

Thick layer of roof tar. Place the tape measure through the hole and measure the wall thickness. Next install flexible flashing tape in a half moon below the pipe overlapping the housewrap. There s a good better best approach for these penetrations.

The good approach is to use a flexible flashing tape. Add 2 inches to this measurement to allow enough free pvc conduit to connect with whatever conduit fittings you will need to. Step 3 remove any debris or dirt from the hole with a wet sponge. Cement based coatings are typically trowelled onto concrete masonry walls or brushed on using a coarse fibered brush.

This is the thick stuff the kind of roof cement that you spread with a trowel. Then we slip a roof vent stack flashing over the pipe and bed the flashing in a 1 4 in. Some cementitious coatings are modified with various polymers to increase elasticity and water penetration resistance. 2 peel protective backing paper off hydrotite a section at a time apply hydrotite to the surface of the pipe press firmly making sure that the hydrotite if fully bonded together to the pipe and the two ends are firmly butted together.

The opening should be about a half inch in diameter and approximately three quarters to one inch deep for a good repair. We lap the tar over the edges of the flashing to promote a better seal. The above wall penetrations require.