Facade and window perimeter sealing in Hounslow, Greater London
Facade sealing in Hounslow, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Draughts around frames and panels
- Failed sealant on precast panel joints
- Patch repairs that keep failing
Facade sealing across Hounslow
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Different surfaces, different methods
Window and door perimeters
Window and door perimeters make up most facade sealing work. A low-modulus, neutral-cure product suits most frame-to-wall joints finished to throw water off the joint.
Precast concrete panels
Precast arrises sometimes crumble or carry old residue. Faces are cleaned to sound concrete, and damaged edges are reported first.
How we handle facade sealing in Hounslow
Some clients need every window on a block resealed; others need a few leaking frames sorted. Either way, the method is the same: old sealant out, faces cleaned, depth set and a new bead tooled in. A 12-month guarantee applies to our workmanship. We work on cladding panel joints, shopfront frames and coping and flashing joints, and the usual reasons a site gets in touch are old perimeter mastic that has dried out and failed seals around shopfront and entrance frames. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Hounslow is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Construction in a London area such as Hounslow means working on constrained sites: small compounds, delivery slots and shared hoists and scaffold. Mastic is usually one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.
What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Where
- Hounslow (TW13)
- Wider area
- Greater London
- Cover
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Facade sealing in Hounslow: the local picture
Hounslow has a number of hotels close by, all within 2 miles. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Hounslow. Add booked deliveries and tight storage, and the mastic package needs planning with the site team.
For contractors at a school such as Meadhurst Primary School, sealing has to be finished before term starts. Extensions at sites like Ashford Hospital (to the north-west of Hounslow) typically sit beside working departments, and the mastic follows strict access rules.
Hounslow is about 1 mile north of Sunbury-on-Thames, in Greater London. If you are looking for facade sealing in Hounslow, we can help. Hounslow is one of 764 places in Greater London on our list. We also cover London, around 15 miles from Hounslow.
Business premises anywhere in TW13 are within our area for facade joints. If your building is just outside Hounslow, we cover Ashford Common (1 mile south-west), Littleton Common (1 mile south-west), Sunbury-on-Thames (1 mile south), Feltham (1 mile north-east) and Bedfont (1 mile north). Bigger towns within reach include London (15 miles east), City of Westminster (13 miles north-east), Marylebone (14 miles north-east), Kensington (11 miles north-east), St Pancras (15 miles north-east) and Hampstead (14 miles north-east).
Around Hounslow
Locally, jobs take us to sites close to Sunbury Park, Sunbury Manor School and Sunbury Manor School, among other places. Hounslow’s nearest station is Sunbury station, about 0.9 miles south-east. Other landmarks nearby include Treaty Centre (3.8 miles north-east) and Ashford Hospital (1.9 miles north-west). Not far away are St Ann's Hill and Staines Reservoirs.
When to call us in Hounslow
Sun, rain and temperature swings wear facade sealant down over the years. UV and weather harden the sealant until it can’t stretch with the building.
Look out for the following:
- Cladding panel joints that have opened up
- Unsightly perimeter sealant on a visible elevation
- Perimeter sealant that has split or peeled away
- Weathered facade joints that have lost their grip
On a campus such as St Mary's University (4 miles east of Hounslow), new teaching buildings and residences are normally built and refurbished around the academic year.
Before you book anyone
- How the existing material will be dealt with
- The terms of the workmanship guarantee
- Is the sealant right for the movement and the substrate?
- Health and safety accreditation such as CHAS
Diagnose, treat, sign off
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. In Hounslow, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.
- Access, site rules and timing are settled with the client up front.
- Weather and temperature are checked against the product’s limits.
- Each joint is cut out and the edges inspected.
- Faces are cleaned, primed where needed and backed.
- Sealant is gunned in and tooled hard onto both faces.
- We hand over with our 12-month workmanship guarantee.
Getting the site ready
- Agree which areas must stay open
- Let us know about inductions and permits
- For older buildings, check the asbestos register before work
Ask for a quote
The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or call the office on 01277 525 020 or email us if you’d rather talk the job through.
Related advice
Your questions answered
Do you take on work at healthcare sites like Ashford Hospital?
Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.
Can work at a site such as St Mary's University fit around teaching?
Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Can you quote from photographs?
Photos, drawings or a schedule are often enough to quote. Where they aren’t, we arrange a site visit before quoting.
How is access to upper-level joints handled?
Access is planned with you before we quote. Let us know what access is in place or planned, and the quote will reflect it.
Is it fine to apply new sealant on top of old?
No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
Do you use silicone for external joints?
It depends on the joint, the substrate and any specification. BS EN 15651 Parts 1 and 2 cover facade and glazing sealants, and specifications often name them.
Do you seal facades in winter?
Wet joints or temperatures outside the product’s range mean waiting. We plan for weather and keep you updated.
Towns and villages near Hounslow
What else we do in Hounslow
What affects the price in Hounslow
There’s no standard rate for sealant work, since sites vary so much. What we look at:
- Access and working height
- The total length or number of joints
- How much existing material needs removing
- Travel to remote or island sites
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Sending details for a quote
For an accurate fixed quote, we need a clear picture of the site. Useful things to include:
- Specification clauses that apply
- The asbestos register, for older buildings
- Where the site is, with the postcode
- When you need the work done
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to give us a call on 01277 525 020 or send details through our quote form with what you know.
Site staff or a sealant specialist?
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.
Looking after the joints
For the best life from the joints:
- Ask about asbestos in pre-2000 mastic
- Keep the sealant details on the building file
- Insist on a full cut-out when joints are renewed
- Walk the elevations once or twice a year
Include facade joints in your planned maintenance inspections. Signs to look for are cracking, edges lifting, chalking and stiffness; record the locations.
Don’t wait for a full elevation to fail. A few metres resealed promptly can stop water damage spreading inside the building.