House construction diary. Part 1. Shut-off waterproofing

Start of construction of the 2020 season. The foundation slab has long been filled in. I posted a description of the construction of the slab earlier on the canal. On the slab, podiums or ribs are poured (raise aerated concrete over the slab so that it does not get wet in autumn during the rains). Poured to the design width of the walls: 400, 300 and 200 mm. On them, you need to lay a shut-off waterproofing. Someone cuts a roll of waterproofing material to be fused and, using a gas torch (or with the help of camping gas cylinders), fuses the coating. Another option is to glue the material with a waterproofing mastic.

Instead of purchasing a meter wide roll and cutting it (you need an unnecessary hacksaw for wood, which will remain in tar), I decided to use a finished one with a width of 0.4 m:

Material characteristics on the third slide. It is made specifically as waterproofing under the walls of a house or Mauerlat and is called cutoff - to cut off the capillary intake of moisture from the foundation along the walls or from the walls to the tree. Waterproofing based on tar, but enclosed in layers of fiberglass (on both sides). Does not smear in hands.

Close-up view of this material. Prices:

Type of rolls. Three rolls are needed for my purposes.

According to the instructions, this waterproofing must be glued to the mastic. I had a little left in the bucket from past works. If the surface of the foundation is uneven, then it should be laid on the mortar. But if you are going to do the laying of the first row in one day (by a team), then it is enough to press the waterproofing with blocks from the wind and do the planned work.

He went with a hammer and knocked down the protruding sharp stones above the surface of the foundation. Otherwise, they can pierce the waterproofing. I also cut off the protruding beacons from the foundation with a grinder - they also interfered.

Bonding process. Because I didn't have much mastic, then I glued it in segments with an interval of half a meter.

The final view of the installation of waterproofing around the perimeter. Waterproofing is also glued so that nothing moves during the marking of the corner blocks of the walls and the laying of the first row of walls.

The internal load-bearing wall is 300 mm thick. Here the roll had to be cut. And the leftovers from the third roll will be enough for the partitions. They are 200 mm thick (I will cut the rest of the roll in half with a clerical knife after stacking).

There was not enough mastic and here I pressed the waterproofing in blocks, having previously pulled it well.

In general, the size of the cut-off waterproofing turned out to be convenient for me. Lightweight roll and no need to cut anything for outside walls.

***

Photos of the author (c)

Subscribe to the channel, add it to your browser bookmarks. There is a lot of interesting information ahead.