image

New House Basement Waterproofing at Portrush, Co. Antrim

Portrush, Co. Antrim, Northern Ireland
Stronghold Preservation designed and specified a Cavity Drain Basement Waterproofing system for this conversion of an old stone barn, and new extension, to include a new basement & dwelling, built near Portrush, Co. Antrim. The existing barn was partially ground retaining, constructed from stone; finished ground level was 1.5 metres above proposed finished floor level, with one open elevation, allowing for drainage, and eliminating the need for a sump and pump. Stronghold Preservation designed and installed a cavity drain basement waterproofing system, to a Grade 3 dry environment, as required by BS8102.


  • Refurbished barn and new build house & basement; cavity drain basement waterproofing at Portrush, Co. Antrim, Northern Ireland, NI 
  • Renovated barn and new build house & basement; cavity drain basement waterproofing at Portrush, Co. Antrim, Northern Ireland, N 
  • Barn portion of dwelling is partially a ground retaining structure; cavity drain basement waterproofing at Portrush, Co. Antrim, Northern Ireland, NI 
  • Cavity drain basement waterproofing membrane mechanically fixed to the walls below ground level, at Portrush Co. Antrim, Northern Ireland, NI 
  • Refurbished barn and new build house & basement; cavity drain basement waterproofing at Portrush, Co. Antrim, Northern Ireland, NI 
  • Renovated barn and new build house & basement; cavity drain basement waterproofing at Portrush, Co. Antrim, Northern Ireland, N 
  • Barn portion of dwelling is partially a ground retaining structure; cavity drain basement waterproofing at Portrush, Co. Antrim, Northern Ireland, NI 
  • Cavity drain basement waterproofing membrane mechanically fixed to the walls below ground level, at Portrush Co. Antrim, Northern Ireland, NI 

Further Information


Stronghold Preservation installed the Newton Cavity Drain system: the basement waterproofing membrane was fixed to walls with fixing plugs, the basedrain inserted with inspection ports for maintenance, and a waterproof floor membrane installed.  A 10 year insurance backed guarantee was provided.

Stronghold Preservation are approved installers of Newtons Cavity Drain Basement Waterproofing System.