Service · Services
Windows inspection: sealing and insulation
Independent diagnosis of your windows: air and water tightness, thermal and acoustic insulation, installation quality, connections to the shell. Smoke and permeability tests if needed. Enforceable report within 7 days to activate ten-year liability, perfect completion or insurance recourse.
280 €
from · VAT incl.
1-2 h
on site
7 days
report delivered
Wallonia
+ Brussels
expert testing window airtightness with a smoke generator
For whom
A windows inspection tailored to four situations.
01
New-build owner
Water or air leaks, excessive condensation, installation defect after reception. Ten-year or perfect-completion qualification and recourse preparation.
02
Renovation owner
Newly replaced windows with defects (sealing, insulation, opening). Workmanship diagnosis and independent technical arbitration.
03
Pre-purchase buyer
Suspect or aged windows during a viewing. Opinion to estimate remaining lifespan, negotiate the price or set a suspensive condition.
04
Owner in dispute
Disagreement with carpenter or installer after faulty installation. Drafting of an enforceable report, basis for amicable or judicial proceedings.
Our method
Five steps from survey to enforceable report.
Comprehensive audit methodology: visual check, verification of shell connections, smoke airtightness test, sealing measurement. Compared to current NIT-CSTC and EPC requirements.
- 01Phone briefingPreliminary exchange: installation date, brand and window type (PVC, aluminium, wood), complaints (whistling, condensation, leaks). Submission of technical sheets.
- 02On-site inspection1-2 hour visit with control of seals, shell connections, sills, hardware, and smoke test if needed to detect air leaks.
- 03Differential diagnosisQualification: installation defect, product defect, under-insulation, shell connection defect, ageing. Ranking and identification of responsibilities.
- 04Report drafting15-25 page document with located HD photos, measurements, legal qualification, NIT-CSTC and EPC references, and quantified rework recommendations.
- 05Recourse follow-up if neededLetter templates to the carpenter, home insurer or ten-year liability insurer. Coordination with partner lawyer if legal action.
Deliverables
What you walk away with, concretely.
15-25 p. enforceable report
Structured document with HD photos, measurements, legal qualification and recommendations. Enforceable in insurance, conciliation or first-instance court.
Defects mapping
Annotated plan with precise location of each defective window, defect type and severity level. Centrepiece of the recourse file.
HD geolocated photos
Detailed photo report of seals, connections, sills and watch-out points. Annexed to the report and usable in proceedings.
Quantified estimate
Estimated cost of rework: seal rework, hardware adjustment, window replacement. Costing basis for insurance or recourse.
Letter templates
Tailored template letters: carpenter, installer, home insurance, ten-year liability or syndic depending on the origin identified.
30-min briefing included
Half-hour call to review the report, prioritise actions and lock in the rework or recourse strategy.
Pricing · VAT incl., all-inclusive
Three packages for your need.
Flash diagnosis
From 280 €
Visit + written opinion · 1h on site
- 1h inspection
- 3-5 page written opinion
- Main defect qualification
Le + demandé
Full inspection
From 480 €
Diagnosis + enforceable report
- Everything in 'Flash diagnosis'
- 15-25 p. enforceable report
- Smoke test if relevant
- Quantified estimate
Inspection + recourse
From 780 €
Inspection + legal file
- Everything in 'Full inspection'
- Legal file preparation
- Partner lawyer coordination
- On-site rework follow-up
Testimonials
They entrusted us with their windows diagnosis.
★★★★★
« Leaks on 8 windows from the first winter. The carpenter blamed the weather. The report demonstrated a generalised installation defect. Perfect completion activated. »
photo client
Marc Vandersmissen
New-build owner · Hasselt
★★★★★
« New wooden windows already warped. Clear diagnosis: unsuitable species, faulty finish. Replacement obtained by the carpenter without proceedings. »
photo client
Élise Marchal
Renovation owner · Namur
★★★★★
« 1985 apartment visited before purchase. Single-glazed windows still in place. Flash report: replacement at €14,000. Purchase price adjusted accordingly. »
photo client
Pauline Devresse
Pre-purchase buyer · Brussels
FAQ
Your questions about the windows inspection.
Does a window water leak fall under ten-year liability?
Yes, if it compromises the sealing of the property and appears within 10 years of reception. The expert report qualifying the workmanship defect is the centrepiece of the ten-year liability recourse.
How to test window airtightness?
Via smoke or air permeability test. We use a smoke generator to visualise leaks from inside. For water-tightness defects, a hydraulic pressure test can be added.
My PVC windows warp in the sun — is this normal?
No beyond 2 or 3 mm on the diagonal. Excessive warping reveals under-reinforced PVC or poor exposure. It is a product defect falling under manufacturer warranty or ten-year liability depending on the case.
How much does full window replacement cost?
From €600 to €1,800 per window installed, depending on dimensions, material and performance. Our report provides a precise quantified estimate per item, usable in insurance or before a court.
What documents to prepare before the visit?
Carpenter invoices, window technical sheets, ten-year liability certificate, reception minutes, prior photos if any. The better documented the file, the more precise the diagnosis.
Are you independent from carpenters and manufacturers?
Strictly. We refuse any case where we have a commercial relationship with the contractor, manufacturer or opposing expert. Our mandate comes exclusively from the owner.
Prefer email? contact@reception-provisoire.be