Showing posts from August, 2019

Cavity wall insulation and sub floor ventilation

My property has a suspended timber floor and was extended at the entier rear part of the old house  with a solid concrete floor. We have been told by RICS surveyor that the airflow was already inadequate with only 3 aibricks for the whole of the subfloor and it seems as if this should have been flagged up during the pre install survey.
In fact we got a CIGA authorised remediation contractor to review the property for extraction and re-install and he said that it wasn’t suitable for reinstall but regardless we needed 6 new air bricks to meet the current regulations.

According to Technical Note 18
"Extensions built to extend across the entire rear elevation of a property also compromises this essential cross flow ventilation, raising humidity below the timber floor and increasing the potential risk of timber destroying mould growth to develop.
CIGA has seen a marked increase in recent years of timber floor board and joist deterioration caused by reduced cross flow ventilation, with t…

Chartered Surveyor's Voluntary service (Challenging CIGA's inspection reports at ADR)

In this post I explain how to apply to the Chartered Suveryor's Voluntary service (CSVS) via the Citizen's Advice Bureau. RICS describes the CSVS: "This service provides free property advice to people who would otherwise be unable to obtain professional assistance from a Chartered Surveyor.

This page doesn't constitute best advice but offers one perspective which you might to consider but please do your own reasearch and make up your own mind.

Why you probably need a survey?

The CIGA 25 year guarantee covers defects in workmanship or materials.
It seems that if CIGA is challenged on the validity of the install or some clear industry standard violation then the claimant is likely to be prematurely referred to ADR. I say premature because the  process was always supposed to a last resort not an excuse to avoid investigating in full.

However, the premature referral to ADR is a bit of a trap. Homeowners desperate to fix damp and destruction of failed CWI may be lured by th…