Facade Sealing in Mortlake
Facade joint and window perimeter sealing on commercial buildings across Mortlake, by CSCS-carded applicators. CHAS accredited and fully insured.
- Patch repairs that keep failing
- Sealant pulling away from frames or panels
- Weathered joints at frame-to-structure perimeters
Facade sealing for Mortlake sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Facade sealing in Mortlake, done properly
Weather decides a lot in facade sealing. The sealant needs a dry joint and temperatures inside the maker’s limits, so frosty or damp mornings can hold work back. We build that into the programme and tell you if the forecast changes the plan. We work on stone and brick facade joints, shopfront frames and coping and flashing joints, and what we’re called in for most is patch repairs that keep failing and failed sealant on precast panel joints. Searching for sealant specialists in Mortlake? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building.
Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Location
- Mortlake (SW14, SW13, SW15)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
FAQs: Mortlake
Will you plan work around the academic year at somewhere like University of Roehampton?
Yes. We plan campus work around teaching, exams and residence turnarounds. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Is hospital work, at somewhere like Barnes Hospital, something you do?
Yes, provided the work is planned with the site’s estates team. Work is phased so departments keep running, under the site’s own rules.
When is resealing likely to be due?
Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.
Is it okay to overlay old mastic?
No. A bead run over old sealant soon lifts. We remove the failed sealant, clean the faces, set the depth and reseal.
Are you CHAS accredited and on Constructionline?
Yes. We are CHAS accredited and a Constructionline member, which helps with supplier vetting.
Do we need an asbestos check before resealing?
It’s worth checking in any building from before 2000. The dutyholder holds the asbestos register, so ask for it before we start. Suspect material is left alone until it has been tested.
Can you fit around our working hours?
The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.
Facade sealing in Mortlake: the local picture
Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Mortlake. Deliveries are booked and storage is tight, so mastic materials come in as needed. Mortlake has plenty of hotels close by, all within 2 miles. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.
For a contractor working at a hospital such as Barnes Hospital, which lies east of Mortlake, perimeter and facade sealing is planned around patients and deliveries. Projects at schools like Thomson House School work to term dates, so mastic is programmed tightly.
Mortlake is about 3 miles west of Fulham, in Greater London. Commercial clients in Mortlake can call on us for facade joints, as part of our coverage of Greater London. We work across 764 places in Greater London, from busy centres to rural villages. Sites around London have their own page, roughly 8 miles from Mortlake.
Work on facade joints is covered throughout SW14, SW13 and SW15, whatever the building. If your site is on Elm Road, Well Lane and Coval Road or close by, we can quote for facade joints. Access to Mortlake is via the A3003. Just outside Mortlake, we also work in East Sheen (1 mile south-west), North Sheen (1 mile north-west), Barnes (1 mile north-east), Grove Park (1 mile north) and Roehampton (1 mile south-east). A short drive away, we cover London (8 miles east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north-east), St Pancras (8 miles north-east) and Shoreditch (9 miles north-east).
Near you in Mortlake
Around Mortlake, our work takes us to commercial buildings near Richmond Park Academy, Hare and Hounds pub and Palewell Park. Mortlake has its own railway station: Mortlake station. Nearby you’ll also find Ubuntu Museum: African Museum of Humanity (1.1 miles south-east) and Barnes Hospital (less than half a mile east). Open spaces near Mortlake include Richmond Hill and Kew Gardens Lake.
How the job changes by surface
Render and coated surfaces
Paintable sealants exist for joints that will be coated. We confirm the product with you before starting.
Coping and flashing joints
Where the specification calls for sealant at copings or flashings, we can seal them. They sit in the most exposed positions on the building.
Doing it in-house
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.
Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Diagnose, treat, sign off
Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. Planning a London job such as one in Mortlake starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Give us the hours we can be on site and we’ll schedule to suit.
- We look at the joints, the drawings and the access before pricing.
- The old bead is cut away completely, not overlaid.
- Joint faces are cleaned to firm, sound material, with primer where the sealant maker specifies it.
- Backing rod, or bond-breaker tape in shallow joints, limits the depth.
- The new sealant goes in and is tooled firmly onto both faces.
- The completed runs are checked with you, then the 12-month guarantee applies.
Preparing the site
- Let us know about inductions and permits
- Share your working hours and any access restrictions
- Explain the parking and delivery arrangements
Ask for a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call 01277 525 020 or send details through our quote form with what you know.
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Signs you need facade sealing in Mortlake
The wrong product causes its share of trouble: acetoxy-cure silicone may mark stone or corrode certain metals, and an interior product won’t last outdoors. Most external joints call for a neutral-cure, facade-grade sealant.
If one of these sounds familiar, it’s time for a closer look:
- Water coming in around window frames
- Weathered facade joints that have lost their grip
- Failed seals around shopfront and entrance frames
- Failed sealant on precast panel joints
New units and refits on sites such as Kew Retail Park, 1 mile to the north-west of Mortlake, need their panel and perimeter joints sealed to the specification.
What your quote should include
- How the existing material will be dealt with
- Will RAMS and insurance details be available?
- The named product and why it was chosen
- Will CSCS-carded applicators be on site?
Commercial clients in Mortlake
For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. Programme, specification and site rules come first.
When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
Cost factors for facade joints
Your fixed quote is built from the real scope. It allows for:
- Removal of failed or old sealant
- Joint width, depth and condition
- Induction, permit and paperwork requirements
- Distance, for remote addresses
We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote and we’ll price your job on its own details.
Before you send an enquiry
Good information means a firmer quote. When you get in touch, include:
- Whether an asbestos survey exists
- Access details, including height
- Drawings or a marked-up plan, if available
- Where the site is, with the postcode
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, call 01277 525 020 or send photos by email.