North West Domestic · UK Commercial
Commercial Window & Curtain Wall Sealant across the North West & UK.
Commercial glazing perimeter and curtain walling joint sealant repairs across the North West and nationwide across the UK. We do not replace glazing; we reseal the sealant and weatherproof the interface.
- Clean, Precision Trade Workmanship
- 5.0★ on Google (54 Verified Reviews)
- Old Grout & Sealant Always Removed First
- 100% In-House Trained Specialists
Commercial Window & Curtain Wall
Precision Finish
Trade Grade5.0 / 5 on Google
54 reviews · Rated "Great price"
Old Sealant Removed
Stripped back & cleaned first
£5m & £10m Insured
Full public & employers' cover
Fair & Fixed Price
Quick quote by phone or message
Site Qualifications & Accreditations
Certified for domestic homes, commercial sites, powered access and high-rise rope access
Who You Are Dealing With
Deal directly with Liam.From first quote to finished job.
No call centres. No subcontracted strangers. From your first WhatsApp photo quote to the final tooled bead of silicone, Director Liam Harrison oversees your job personally. For specialist tile restoration, Liam works alongside family craftsmen with over 22 years on the tools—ensuring every joint is immaculate.
Liam
· Lead Mastic Specialist · 8 Years ExperienceYour direct point of contact from quote to completion
22+ Years Trade Experience
· Grouting & ResealingTrusted family & senior specialists on the tools alongside Liam
Certified & Fully Insured
· Domestic & CommercialCSCS Gold, SSSTS, IPAF, PASMA, IRATA & NVQ L3 · £5m/£10m insured
Liam · Next Level Sealants
Silicone & Regrouting
UK Commercial Sites“Friendly, tidy and clearly takes a huge amount of pride in his work.”
See how colour-matched silicone looks on your surfaces.
1. Tap What You Need Sealing:
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Scope of Work
Glazing Perimeter Work
We reseal glazing perimeters and curtain walling joints on commercial buildings. Work covers commercial window frame perimeters, curtain walling interface sealant, failed external seals and movement at interfaces. We do not design, manufacture or replace curtain walling or glazing systems; the service is sealant and weather-sealing only. High-level or restricted-access work can be handled through our Rope Access Mastic service where appropriate.
- Commercial window perimeter resealing01
- Curtain walling and glazing perimeter sealant02
- Failed external seal removal and replacement03
- Movement accommodation at interfaces04
- Weather-sealing, not glass or frame replacement05
- Planned maintenance and inspection support06
When to Call Us
Common Problems We Fix
Failed window perimeter seals
01Perimeter seals around windows and curtain walling can shrink, crack or lose adhesion, allowing water ingress. We remove and reseal.
Movement at interfaces
02Thermal and structural movement at window-to-wall interfaces can stress sealant. We replace it with a flexible system that can handle the expected movement.
Curtain walling leaks
03Leaks can follow failed glazing perimeter seals or poor interface details. We inspect and reseal where sealant failure is the cause.
Aged and discoloured sealant
04UV and weathering degrade external sealant. We remove aged material and reseal.
Our Process
How We Do the Job
Assess the glazing perimeter
We review photos, plans and on-site access to identify failed seals and likely movement at window and curtain walling interfaces.
Remove old or failed sealant
Failed mastic is removed and the joint is cleaned back. No patching over old material.
Reseal with the correct sealant
Sealant is selected for the frame material, exposure and joint movement. Backing rod and primer are used where the manufacturer requires them.
Finish and document
Joints are neatly tooled and, where agreed, completion records and photographs are provided for commercial handover.
Proof of Work
Completed Projects
Genuine examples of our sealant and mastic work across the North West and the UK.
Marks & Spencer, Speke Retail Park
Internal and external mastic package for the new Marks & Spencer at Speke Retail Park, including external windows, doors, wall joints, internal movement joints, pillars and the rear service yard.
Aintree Racecourse
Internal and external sealant package on Aintree Racecourse's multi-million pound renovation, including the Jockeys' Changing Room, commercial wet rooms, hospitality areas and external window perimeters.
Everton Stadium
Mastic and sealant package for the new Everton FC stadium at Bramley-Moore Dock.
Specialist Options
Related Services
Rope Access Mastic
High-level or difficult-access glazing perimeter and curtain walling sealant repairs can be delivered through our UK-wide commercial rope-access mastic service where appropriate.
Commercial Mastic
For broader commercial sealant packages including façades, cladding and expansion joints, see our commercial mastic service.
FAQ
Common Questions
Have another question about your job? Send a photo on WhatsApp or use our quote form and we will help straight away.
Do you replace glazing or curtain walling panels?+
No. We are a sealant and mastic specialist. We reseal glazing perimeters and curtain walling joints. If the glazing or framing itself is defective, that is a glazing contractor issue.
Can you work at height on curtain walling?+
For high-level or difficult-access glazing perimeters, we can coordinate with our UK-wide commercial rope-access mastic service where appropriate.
Do you offer planned maintenance for commercial buildings?+
Yes. We can inspect and reseal glazing perimeters as part of a planned maintenance programme for offices, apartments, hotels and managed properties.
More Services
Related Services
North West & Nationwide UK
Commercial Mastic
Subcontract commercial mastic and joint sealing packages across Greater Manchester, Liverpool, Cheshire, and nationwide. CITB SSSTS supervision, CSCS skilled cards, £10m liability insurance, and zero-defect first-time handover sign-offs for main contractors and QSs.
View ServiceWeatherproofing & External Joints Across the North West
External Sealant
External weatherproofing mastic for window and door frames, brickwork, cladding, and expansion joints across Liverpool, the Wirral, and the North West. We mechanically remove failed mastic, install closed-cell backing foam, and apply low-modulus UV-stable weatherseals to stop draughts and damp reveals.
View ServiceUK-Wide Commercial Rope Access
Rope Access (UK)
Specialist commercial rope-access mastic and high-level sealant repairs across the UK, including London. Delivered by an established qualified rope-access team under IRATA Level 3 supervision. Based in Liverpool.
View ServiceWhere We Work
Areas We Cover for Commercial Window & Curtain Wall
Based in Liverpool, we cover Merseyside, the Wirral and the North West daily, with nationwide UK coverage for commercial and construction mastic packages.
Ready When You Are
Request a Commercial Quote
Send the site address, drawings, photos and approximate dimensions and we will come back with a price and programme.
How your quote works
- 1Send photos2 or 3 photos of the job plus your postcode on WhatsApp
- 2Get a fixed priceExact all-inclusive quote agreed before you book — no callout fees
- 3We do the work100% strip-out, tidy finish, backed by our 5-year guarantee
“Great service no mess and and really professional job would definitely recommend them”
Online Quote Request