How it Works

Basement conversions can add value to your property. Check out the13 steps we take when we convert a basement.

All our basement conversions incorporate a Sump Pump. Any moisure will be pumped out automatically.

We also provide battery backups incase the electricity fails. These are ideal for rental properties.

Step 1

Free consultation to explore the different options available based on the clients’ requirements, practical feasibility, budget etc.

Basement conversion in Hale, Altrincham, Cheshire.

Step 2

Following project approval, excavate the old basement floor to the required depth and strip ceilings and walls if required.               

Chamber excavation at Hale conversion.

Step 3

Installation of the underground pipe for the Sump Pump. Viscreen floor ready for concrete. 

Pipes and sump pump installation at the Hale project.

Step 4

First pour the concrete around 100-150mm. 

Arrival of concrete on site and Hale cellar conversion.

Step 5

Tank the walls and floors with the Wykamol Waterproofing Tanking System, followed by taping of all joints with Wykamol 150mm corner tape.

Wykamol Waterproofing Tanking System installation at Hale project.

Step 6

Fix electrics and plumbing. 

Basements Northwest Team working hard on a recent cellar conversion project.

Step 7

Batten out the walls with treated timber.                          

Battening on cellar chamber walls at Hale cellar conversion.

Step 8

Insulate the floor and lay final concrete screed onto floor. 

Basement floor insulation and concrete layer at Hale project.

Step 9

Insulate walls and apply plasterboard onto wooden battens.

Basement chamber wall insulation and plaster boarding in preparation for plastering.

Step 10

Second fix on electric and plumbing. 

Electric and plumbing second fix at Hale conversion.

Step 11

Plaster walls and ceilings.

Plastered and decorated converted cellar - Hale project.

Step 12

Complete woodwork
(skirting, door casings, architraves etc).

Joinery at Hale conversion.

Step 13

Lay final flooring as desired.

Completed basement conversion project - Cheshire

Recent Projects

Our projects in Manchester and Cheshire include shower rooms, complete bathroom conversions, utility rooms, cinema rooms and comfortable basement lounges.


We are a Manchester based family run business who put our customers first. Reputation is everything and your support through kind words means a lot to us at Basements North West.

How it Works

Basement conversions can add value to your property. Check out the thirteen steps we take when we convert a basement.


0161 866 8210 / 07748 732748 / 07969 957226