About
our company
Fire doors can move, wear, be adjusted, decorated, resealed or fall out of alignment over time. Visual inspection remains essential, but it does not quantify smoke leakage. London Quarter provides independent scientific measurement to support inspectors, Responsible Persons, landlords and asset managers with clearer evidence for decisions on risk, repair and replacement.
Why owners use us
to understand whether doors that look acceptable are actually containing smoke adequately;
to identify where limited budgets should be spent first;
to avoid unnecessary full replacement programmes where targeted remedial work may be enough;
to add objective evidence to support decisions with residents, insurers, assessors, contractors, internal and external governance.
The Problem:
Why smoke containment is often misunderstood
Fire doors are typically tested when new, under controlled laboratory conditions.
In real buildings, however:
Doors and frames move over time
Seals degrade or are altered
Installation tolerances vary
Everyday use changes performance
Fire door inspections are essential and identify visible issues — but they do not accurately measure: How much smoke actually passes through a door set in its current condition.
The Solution:
Objective, scientific measurement
London Quarter was founded in 2016 and provides specialist smoke leakage testing, delivering:
Quantified air and smoke permeability
Comparable performance data
Clear identification of underperforming doors
Scientific evidence to support decision-making
