0

Waterproofing Piled Foundations


The waterproofing of concrete-piled foundations presents a problem for many waterproofing systems – particularly those based on sheet membranes. The majority of these systems cannot be used over pile heads and pile caps because they do not have the bearing capacity to support the applied load.

A diagram showing how to waterproof piled foundations.

Waterproofing Piled Foundations

Drybase Crystalline Active Slurry offers a solution to this problem. Because it penetrates into the concrete pile head or pile cap rather than forming a waterproof layer on top, the waterproofing material can support the loads from subsequently poured ground beams or foundation slabs.

An example of a typical application is shown below, however, because piled foundations vary widely in their configuration it is strongly recommended that our technical department are consulted early in the design process. To contact our technical department, please call 01403 210204 or submit an enquiry.

Example 1 – Waterproofing of Pile Head and Ground Beam

The schematic of a pile head ground beam.
  1. Slurry coat the piles with Drybase Crystalline Active Slurry. 1.5 kg/m2 applied in two coats.
  2. Dry sprinkle Drybase Crystalline Active Slurry at the rate of 1.2 kg/m2 to the blinding concrete prior to the concrete pour.
  3. Apply Drybase Quellmax Plus Waterbar circular around the piles in the middle of the slab.
  4. After pouring the concrete slab dry sprinkle Drybase Crystalline Active Slurry at the rate of 1.2 kg/m2 on top of the raft foundation when the concrete reaches initial set. Trowel in until coverage is uniform and the specific finish is achieved. Alternatively slurry coat the horizontal surface with Drybase Crystalline Active Slurry 1.2 kg/m2 in one coat.

Get it Done

Drybase Crystalline Active Slurry 25kg bag
Drybase Crystalline Active Slurry (25Kg)A cementitious, ready mixed in-depth waterproofer for concrete surfaces only.
£75.99
£75.99
All Articles
Advice
Case Studies
News
Which Dehumidifier is Right for You Hero Image Advice
Which Dehumidifier is Right for Your Home?

Compressor or desiccant? Choose the right type of dehumidifier for your household with this handy guide.

Read more
A woman wipes condensation from a window (1600x900) hero image Advice
How to Prevent Condensation on Windows

Window condensation is a sign of a humid environment at risk of damp and mould. Prevent window condensation with a dehumidifier.

Read more
News
Out Now: Dryzone Dehumidifier & Air Purifier

This Dehumidifier and Air Purifier proactively manages your home's humidity and filters out pollutants like pollen, pet dander and dust.

Read more
Dryzone Dehumidifier near a Clothes Airer Advice
How to Dry Clothes Indoors Safely with a Dehumidifier

Read this article to find out how to dry clothes indoors without causing damp and mould.

Read more
News
Out Now: Drybase TS-PLUS 5-Bar Waterproofer

A liquid polymer additive for Drybase TS-Plus to enable basement waterproofing.

Read more
Case Study
Domestic Property Basement Renovation Part 1 – Drybase Tanking System

With Tibby Singh and YDC Basements, Safeguard waterproofed a basement at an end of terrace home in Leeds using Drybase Tanking System.

Read more
Case Study
1940s Concrete Pillbox, West Sussex — High-Performance Waterproofing with Stormdry Masonry Protection Cream

Built in Summer 1940, the Type 26 pillbox is a 6 ft by 6 ft cube just big enough to house 4 soldiers and their guns. The 1 m thick concrete walls were built to withstand a direct hit from a naval warship. 98 tons of concrete went into creating the pillbox. In the 1980s, the whole exterior was covered…

Read more
Case Study
Domestic Bungalow, Swindon - Cleaning and Preventing Mould

When Emerald Damp Specialists stepped inside a severely damp bungalow in Swindon, they knew they had to help. Along with 70 other companies and over 150 volunteers who donated their time and expertise, Emerald Damp Specialists resolved the extreme damp and mould problems at the property free-of-charge. For this project, ensuring that a valued member of the community had a…

Read more
Join our newsletter

Subscribe to get information about products and offers.