Mastic Sealing in Mortlake
Mastic sealing for building owners, managing agents and housing associations across Mortlake, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Repeated reactive repairs to the same buildings
- Worn sealant at communal door frames
- Cracked, hardened mastic round windows on a block
Mastic sealing for businesses in Mortlake
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
About our mastic sealing in Mortlake
Across Mortlake and the rest of Greater London, we work the same way: send details, get a fixed quote, we seal, and the work is guaranteed. A list of buildings, a few photographs and approximate joint numbers are enough for a quick quote or we can visit. Most enquiries involve cracked, hardened mastic round windows on a block and draught complaints from residents or tenants, on communal entrances and stairwells, balcony and threshold joints and window and door perimeters on blocks. Most enquiries from Mortlake start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
London has a large stock of purpose-built blocks, mansion flats and converted buildings managed by agents and housing associations. Window and door perimeters, balcony joints and communal areas all have mastic that ages together across a building, which is why block-wide programmes make sense.
A 12-month guarantee applies to all our work. If an installation problem shows up, call 01277 525 020 or use the quote form and we’ll arrange a return visit.
- Location
- Mortlake (SW14, SW13, SW15)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Common problems we fix in Mortlake
Many failed joints were sealed without backing rod, so the mastic is glued to the joint bottom too. That three-sided adhesion stops it stretching and it tears.
Most enquiries start with one or more of the following:
- Old repairs sealed over failed mastic
- Mastic failing across several blocks on an estate
- Water getting in round frames after rain
- Open joints in brickwork or panels
Property owners at sites such as Kew Retail Park (1 mile north-west of Mortlake) can have mastic renewed between lettings.
Questions to ask before you book
- How they’ll work around occupants
- How long is the guarantee, and what does it include?
- How the existing material will be dealt with
- Whether their applicators hold CSCS cards
Maintenance after handover
Cleaning and maintenance staff play a part too. Pass these on to them:
- Keep bins and bikes away from communal door frames
- Group repairs into a planned programme
- Prioritise elevations facing the weather
- Check the asbestos register before any old mastic is disturbed
Keep bins, bikes and deliveries away from low-level joints where you can. Damage at low level is the most common reason communal joints fail early.
Joints on a building age together so a single failure is a sign to check the rest. Doing them together saves going back again and again.
Nearby places to Mortlake
Also in Mortlake
General trades versus a specialist
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.
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.
Frames, entrances and external joints in Mortlake
In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. We work to your notice and access plan.
Owners of student blocks near University of Roehampton, 1.1 miles south-east of Mortlake, can schedule frame and external mastic for the summer vacation. Site managers at schools like Thomson House School can fit frame mastic into the summer works.
Mortlake is about 3 miles west of Fulham, in Greater London. Businesses, contractors and managing agents in Mortlake can call on us for mastic joints. 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.
Anyone looking for mastic sealing in SW14, SW13 and SW15 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. For a building on Elm Road, Well Lane and Coval Road or nearby, send details and we will quote for mastic joints. Being close to the A3003, Mortlake is straightforward for us to reach. Sites close to Mortlake are covered too, including 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).
Landmarks near Mortlake
Recent enquiries here include premises near Richmond Park Academy, Hare and Hounds pub and Palewell Park. There’s a railway station in Mortlake itself: Mortlake station. Other landmarks nearby include 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 quote is worked out
Your fixed quote is built from the real scope. It takes account of:
- Induction, permit and paperwork requirements
- Any access equipment needed
- Travel to remote or island sites
- Which sealant the job calls for
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we will explain how it’s made up.
Sending details for a quote
Good information means a firmer quote. When you get in touch, include:
- Rough lengths or quantities, or drawings if you have them
- Asbestos survey details if the building is older
- Whether the building will be occupied during the work
- Any specification or named product
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. If you have questions first, call 01277 525 020 or send photos by email.
On site: what to expect
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. For a job in Mortlake, access comes first: 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.
- Each block or building is walked and the failed joints recorded with the likely cause.
- We send a fixed quote that sets out the joints, the products and the programme.
- The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
- We remove the old mastic completely and clean the joint faces back.
- Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
- Completed joints are inspected and carry a 12-month workmanship guarantee.
Getting the site ready
- Share the asbestos register for older buildings
- Point out any areas we must not close
- Point out parking and an unloading spot
Getting a fixed quote
Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to speak to us on 01277 525 020 or email drawings and photos.
Advice
Mortlake: questions and answers
Will you take on work at estates like Kew Retail Park, close to Mortlake?
Yes. Estates, retail parks and business parks around Mortlake, Kew Retail Park among them, are all within reach. A few photographs and the unit address let us price the work.
Do you work for managing agents with blocks near Mortlake station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Give us the building’s details and say how residents are notified, and we will quote and plan to suit.
How many days will you need on site?
That varies with the scale of the job, though a typical visit typically takes a few days for most blocks, with larger programmes scheduled building by building. Larger or phased jobs take longer, and we will give you a timescale with the quote.
Will you just go over the old sealant?
No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.
What guarantee do you give on resealing?
Our workmanship carries a 12-month guarantee, backed by public liability insurance.
Will residents or tenants be disturbed?
Occupiers stay in the building throughout. If any flats or units need access, we’ll tell you in advance so it can be arranged.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
Surface by surface
Estate-wide resealing programmes
An estate of similar buildings suits a rolling programme. Each block is priced and scheduled in order.
Communal areas
Low-level communal joints get damaged more than most and tend to fail first.