Greater London · England
Shacklewell Window Mastic
Problem with your window and door frames in Shacklewell? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Cracked internal joints between frame and plaster
- Rushed sealant from a window installation
- Leaking joints at the ends of sills
Why it’s worth doing now in Shacklewell
Resealing frames is a short job: it takes anything from an hour or two to a full day, depending on how many frames there are. Leave it until water is coming in and you may need plastering and decorating as well. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
Why us?
- ARBOMaster approved applicator
- White, clear, grey or another colour, product permitting
- Trusted Arbo and Everbuild sealants
- Fully insured
See our cost guide and customer reviews.
About our window mastic in Shacklewell
Over two decades of sealing frames has taught us which products suit which walls. We’re ARBOMaster approved and fully insured, and we give a one-year guarantee on the work. If you have white mastic on grey or black frames and cracked internal joints between frame and plaster, we can put it right, whatever the surface.
Many London homes are flats, with windows high above the street. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Place
- Shacklewell (N16, E8, E5)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Windows and doors in Shacklewell
In a converted house or block, who looks after the windows depends on the lease, so check that before booking. Historic houses like Sutton House (about 0.9 miles east) are a reminder that the area around Shacklewell has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
For an older house near a landmark such as Church of St Barnabas, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Shacklewell is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Shacklewell is about 1 mile east of Highbury, in Greater London. Jobs in Shacklewell get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Shacklewell is one of 764 towns and villages in Greater London where we work.
Every address in N16, E8 and E5 is within our area for window mastic, from the main roads to the quietest streets. Streets in the area include Muir Road, Allen Road and Downs Road, all of which we cover. With the A107 close by, Shacklewell is easy for our applicators to reach. If you’re just outside Shacklewell, we cover West Hackney (1 mile north), Dalston (1 mile south), Kingsland (1 mile south-west), Newington Green (1 mile west) and Mildmay (1 mile south-west). Further out, we also cover London (4 miles south), City of Westminster (4 miles south-west), Marylebone (4 miles south-west), Kensington (7 miles south-west), St Pancras (3 miles south-west) and Walthamstow (3 miles north-east).
Near you in Shacklewell
Locally, jobs take us to homes and businesses close to Kingsland Secondary School, The Shacklewell Arms and Shacklewell Primary School and the streets around them. There’s a railway station in Shacklewell itself: Rectory Road station. Nearby you will also find Montfichet's Tower (3 miles south-west) and German Hospital (under half a mile south). Green spaces nearby include Hollow Pond and Woodberry Wetlands.
When to call us in Shacklewell
Timber windows bring their own problems. Old mastic gets painted over and cracks under the paint, and the wood moves with damp as well as heat.
These are the problems we are asked about most:
- Cracked or shrunken mastic around the frame
- White mastic on grey or black frames
- Gaps where the sill meets the wall
- Cold air getting in at the frame edge
For landlords with property near Rectory Road station, renewing tired window mastic between tenants heads off draught and damp complaints.
What to look for in a quote
- The length of the guarantee
- Who turns up on the day
- Whether you can choose the colour
- Which sealant they’ll use, and why
Shacklewell: your questions answered
Do you cover Shacklewell for window mastic?
Yes, Shacklewell is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job.
I let a flat near Rectory Road station. Can you help?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
When is the sealant fully cured?
It depends on the product and the temperature. Before we leave, we will tell you the cure time.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few photos.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Can you do the inside joint as well?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
Will new mastic stop draughts?
Yes, if the air is getting in around the frame. If it’s through the window’s own seals or a hinge, that is a different fix, and we’ll say so.
Is the new sealant paintable?
Most silicone can’t be painted. Let us know beforehand, and we’ll use a paintable product where it suits.
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Different surfaces, different methods
Window sills
Masonry sills can have joints where water gets in, including the one between the sill and the frame above. We seal those with a sealant suited to masonry.
Composite doors
Draughts round the door leaf generally come from worn seals or adjustment, not the mastic. We seal the frame and let you know about anything else.
What affects the quote in Shacklewell
The price is agreed before any work begins. It takes into account:
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- The old material and how stubborn it is
- Any working-time requirements on site
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Helping us quote
To help us quote quickly, please include:
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved and send you a clear quote.
Also near Shacklewell
More services for Shacklewell
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
For anyone letting property in or around Shacklewell, several properties can go on one quote. Just tell us the addresses and what each one needs.
How it works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes most of a day for a typical house, less for a few frames, depending on the size of the job. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Clear the area around the work
- Let us know about earlier repairs to the joints
- For business premises, tell us about site rules or sign-in
Getting a quote
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.