Greater London · England
Window & door mastic in Pimlico, Greater London
Mastic around window and door frames, sills and patio doors for homes and businesses in Pimlico and across Greater London. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps left after new windows were fitted
- Black, perished sealant on frames
- Mastic that has split away from the wall
What affects the cost of window mastic
You will get a clear quote before work begins. It takes into account:
- Which sealant suits the joint
- How many areas need sealing
- Mould in or behind the old joints
- Any working-time requirements on site
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Helping us quote
When you contact us, it’s useful to know:
- Where the property is
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
- The rough size of the job
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Window mastic in Pimlico, done properly
From a single sill to a whole house of windows, the work is priced before anything is done. To get one, ring 0345 464 0079 or email us with the number of frames and any access details. Common call-outs are for gaps left after new windows were fitted and mastic that has split away from the wall, on timber windows & doors, composite doors and window sills.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, letting in draughts and water.
Big or small, it’s backed by our one-year guarantee in Pimlico and across Greater London.
- Location
- Pimlico (SW1P, SW1V, SW1W)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Other services in Pimlico
Pimlico homes and the weather
Historic houses like Buckingham Palace (about 0.9 miles north) are a reminder that the area around Pimlico has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around St Gabriel's, the joint between an old wall and a newer frame is usually the first place rain gets in. Pimlico is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Pimlico is about 1 mile east of Brompton, in Greater London. Across the SW1P area, we can carry out window mastic at your property. Our Greater London coverage runs to 764 places, Pimlico among them.
Here we cover the SW1P, SW1V and SW1W postcode area for window mastic. Whether your property is on Ponton Road, Wilton Road and Ebury Square or a nearby road, we can help. Pimlico is on the A202 and A3212, so it’s easy for us to get to with everything needed for window mastic. Nearby, we also carry out window mastic in Victoria (1 mile north-west), Nine Elms (1 mile south-west), Westminster (1 mile north), Millbank (1 mile north) and Vauxhall (1 mile east). We also work in nearby towns such as Kensington (3 miles west), St Pancras (3 miles north), Shoreditch (4 miles north-east), Walthamstow (8 miles north-east), Hoxton (4 miles north-east) and Whitechapel (4 miles north-east).
Around Pimlico
We work in homes and buildings around Lambeth Palace Library, Grosvenor School of Modern Art and Pimlico Gardens, among other places. Nearby too are Denbigh Arms (under half a mile north-west) and Pimlico Academy (less than half a mile south-east). Pimlico’s nearest station is London Victoria station, roughly 0.5 miles north-west. Nearby you’ll also find Baynard's Castle (2.3 miles north-east) and Harrods (1.3 miles north-west). Open spaces near Pimlico include Bellenden Road Nature Garden and Ludgate Hill.
Landlord and commercial work in Pimlico
Housing providers, facilities teams and property managers book us too in Pimlico and across Greater London. We can quote a run of properties together, and we are fully insured for the work.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Why it’s worth doing now in Pimlico
A quick bead over the top of old mastic looks like an easy fix, but it will not grip old, dirty sealant. It soon lifts and the leak carries on behind it. The old mastic has to come out. In a flat in Pimlico, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Why book with us
- Neat joints and a tidy finish
- Fully insured
- Every job guaranteed for a year
- Colour picked to suit the job
Take a look at our cost guide or customer reviews.
Pimlico: your questions answered
Is parking a problem for a job in Pimlico?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Can you help a landlord with a rental near London Victoria station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Do you have sealant for grey or black windows?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee, and we are ARBOMaster approved applicators.
Do you need window mastic in Pimlico?
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, while a joint packed solid cannot stretch. That’s what backing rod is for.
The problems people usually mention when they call are:
- Leaking joints at the ends of sills
- Untidy mastic left by window fitters
- Whistling draughts around closed windows
- Cracked or shrunken mastic around the frame
If you let a flat or house near London Victoria station, renewing tired window mastic between tenants heads off draught and damp complaints.
Before booking anyone
- How hidden problems are handled
- What guarantee comes with the work
- Are they insured?
- Which sealant they’ll use, and why
How the visit works
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a handful of frames, longer for a whole house. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Pimlico. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Getting ready for the visit
- Mention any parking rules near the property
- Where the joints are inside, avoid wetting them before we arrive
- Move anything stored near the joints
How to get a quote
If you are in Pimlico and need window mastic, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
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Keeping the joints in good condition
After the cure time, these simple habits help:
- Keep drainage slots and sill grooves clear
- Keep jet washers away from the mastic
- Keep paint off silicone joints
- Clean frames with a soft cloth and soapy water
Wipe the frames with soapy water when you clean the windows, and avoid solvent cleaners on the sealant.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. Resealing closes it.