Wall tie replacement for Harrow properties
We cover Harrow and the HA1 postcode district, including nearby Wembley, Northolt and Greenford. It is about 10 miles north-west of London.
If your Harrow installation has a guarantee, we check it first; the guarantee route may cover the work. Defects such as failed pointing, leaking gutters and bridged damp-proof courses are listed and priced separately for Harrow properties, so you can choose who fixes them.
Wind-driven rain is the first thing the surveyor weighs up. Much of Greater London sits in the more sheltered driving-rain zones of the UK, which widens the choice of fill. Exposed elevations, coastal sites and high ground still get checked wall by wall.
On compliance, if cavity wall insulation follows in Harrow, filling a cavity is notifiable building work and needs a building notice or competent-person self-certification.
Rules in England
Filling a cavity is notifiable building work and needs a building notice or competent-person self-certification if insulation work follows.
Sources: Planning Portal: cavity wall insulation and building regulations; CIGA: CWISC competent person scheme.
Signs of wall tie failure
Horizontal cracks in mortar joints at regular vertical intervals, bulging brickwork, or lifting of the roof verge. Older galvanised ties, especially in walls built before the 1980s, are the usual suspects.
What is included in Harrow
- Isolation or removal of old ties where needed
- Tie inspection with metal detector and borescope
- Remedial stainless ties to a set pattern
- Making good
Guide prices for Harrow
| Wall tie replacement guide prices | Guide price |
|---|---|
| Remedial wall ties, detached house | £1,995–£3,495 |
| Remedial wall ties, semi-detached house | £1,495–£2,495 |
| Remedial wall ties, terraced house | £995–£1,795 |
This work is not insulation, so it is normally standard-rated for VAT. Guide prices include VAT where it applies. Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.
The steps for wall tie replacement in Harrow:
Tell us what is happening
Postcode, property type and what you have noticed.
Price agreed first
We confirm the price before anyone visits.
Visit and checks
Photos and readings at the areas that matter.
Findings in writing
What we found and the options, each priced separately.