Waterproofing World # Basics – Haunching
Haunching is a process of making the sharp corners into smooth curve in areas like floor & wall junctions and wall & wall junctions.
Purpose of Haunching:
The co-efficient of thermal expansion and contraction is different for floor and wall surface. Due to this the thin waterproofing layer may get damaged and leads to waterproofing failure.
By providing haunching in corner the waterproofing layer will get more area when compared with corner surface (without haunching). It will not lead any damages to waterproofing layer. Also it helps in placing waterproofing layer easily.
Surface preparation:
Dead mortar chipping to be done and removed of loose materials should be ensured.
Ensure that the surface is free from oil or grease or any other contaminants
Material preparation:
Cement mortar should be prepared in the ratio of 1:3
Any one of the suitable admixture should be added with cement mortar. For example admixture like SBR LATEX should be added with the cement mortar as per the manufacturer’s instruction.
After mixing the cement mortar should be consumed within 30minutes of its mixing.
Application:
Water should be sprinkled over the prepared surface; then cement slurry to be applied
Then the prepared cement mortar to be splattered over the cement slurry
Then the cement mortar should be finished in the size of 40 to 50mm
Finishing can been done with PVC pipe for getting smooth curve.
Samples:
This was a very well-explained introduction to waterproofing and haunching. Perfect for beginners in civil engineering. At LeakFoe, we educate homeowners on waterproofing basics so they can prevent seepage before it becomes a major issue. Very useful article!
ReplyDeleteGreat explanation of haunching and waterproofing basics — this is an area many homeowners overlook. At Wet2Dry Solutions, we apply liquid membrane waterproofing to protect critical junctions and prevent seepage. Very useful and clear guide!
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