Waterproofing Lift Wells

The waterproofing lift wells sometimes called lift pits, is an integral part of the building structure. Waterproofing of the lift pits must be part of the design plan well before the commencement of the building itself.

The consequences of a lift well failing and water ingress, even just dampness, can result in

  • Damage to the Lift mechanics
  • Damage to the lift electronics
  • Health & Safety Issues
  • loss of longevity of build structure and lift itself
  • Higher maintenance costs

Cementitious Waterproofing Methods using Drizoro Products

Lift well waterproofing requires very little work when structure is in good condition. Correct preparation of the new substrate, followed by the application of cementitious based waterproofing membrane.
Please note that the timing of the application is as always extremely important in relation to the work of other trades carrying out other works to the pit which may damage the waterproofing membrane.

EXTERNAL Cementitious Waterproofing of Lift Wells:

  1. Preparation –  clean external walls remove efflorescence, and dampen. Surface must be damp but water should not running off the surface.
    Drizoro products come as premixed powders, add the prescribed amount of water (follow, DO READinstructions on bag, watch how to video links, contact us) and apply using stiff brush or MaxBrush, long handled broom/brush
  2. Fill all suspect areas using MAXREST
  3. Wet thoroughly apply MAXSEAL or MAXSEAL FLEX in 2 coats @ 1Kg/coat/m2. Wet the surface again before applying the second coat.

INTERNAL Waterproofing Lift Wells:

Lift pit waterproofing requires very little work when structure is in good condition. Correct preparation of the new substrate, followed by the application of cementitious based waterproofing membrane

  1. Remove all render, paint or other material from the masonry substrate.
  2. Where dry fill voids and holes with MAXREST, fill leaking areas using MAXPLUG for all major water flow.
  3. Wet dampen area and apply MAXSEAL or MAXSEAL FLEX where there is residue of other materials.
  4. Allow to first coat to cure overnight, and seal any remaining water ingress using MAXPLUG .
  5. Dampen before applying the second coat of MAXSEAL.
  6. Always apply MAXSEAL or MAXSEAL FLEX in 2 coats @ 1Kg/coat/m2 wet between coats.
seal-lift-well-before, Waterproofing Lift Wells

BEFORE – The lift pit was sealed. Ground water present

seal-lift-well-after, Waterproofing Lift Wells

After – The lift pit was sealed using Drizoro materials


Note: When waterproofing lift pits for areas below water table they require additional works depending on the hydrostatic pressure involved please contact us should you have any doubts.

Reference:- Basement Waterproofing >>> for more reading on sealing against hydrostatic pressure

 

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