Greater London · England
Window & door mastic in Aldersbrook, Greater London
Window mastic in Aldersbrook from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Hard, cracked sealant around windows
- Leaking joints at the ends of sills
- Rushed sealant from a window installation
Window mastic in Aldersbrook, done properly
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that can’t flex, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. Common call-outs are for cracked or shrunken mastic around the frame and untidy mastic left by window fitters, on patio & French doors, timber windows & doors and window sills.
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, and access in Aldersbrook is something to talk through when you book.
Your job is guaranteed for a year, as with all our work.
- Where
- Aldersbrook (E11, E12, E7)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Walk round the house once a year and look at the joints
- Repaint timber before it’s bare
- Keep drainage slots and sill grooves clear
- Keep paint off silicone joints
Most silicone sealants will not take paint, so if you’re planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
A failed joint lets water into the wall a little at a time. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
Aldersbrook: your questions answered
I let a flat near Wanstead Park station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
Can parking be tricky for a visit in Aldersbrook?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Do you work on first-floor windows?
Generally, yes. We plan safe access before the job, so mention the height and anything in the way.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you.
Can you get sealant to suit coloured frames?
Yes, in most cases. Mention the frame colour when you ask for a quote and we will match it as closely as we can.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Places near Aldersbrook
More services for Aldersbrook
What happens if it’s left?
Draughts and leaks do not always mean new windows. If the frames and glass are in good order, resealing the joints is often all that is needed. If we find failed glass units or worn seals, we’ll tell you. In a flat in Aldersbrook, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we’ll go through it with you.
Why book with us
- Neat joints and a tidy finish
- Experience in homes, commercial sites and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
- 4.9 on Google from 180+ five-star reviews
See our cost guide or customer reviews.
What affects the quote in Aldersbrook
We do not publish a price list, because jobs vary so much. The quote depends on:
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- The type of sealant required
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before we start.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
What we do, step by step
We keep the work tidy and contained to the joints we are treating, so you can get on with your day. Expect the work to take a few hours for a few frames, or a day or more for a whole house. For a job in Aldersbrook, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us if parking is tricky
- Clear the area around the work
How to get a quote
There’s no standard price list. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or send us an email.
Advice
Windows and doors in Aldersbrook
In London conversions and blocks, the lease decides who is responsible for the frames, so check that before you book. With historic houses such as Valentines Mansion (about 1.5 miles north-east) nearby, there’s older building stock in the area around Aldersbrook as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
For site and facilities teams at buildings such as Aldersbrook Primary School, larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as Church of St Gabriel, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Aldersbrook is about 1 mile north of Forest Gate, in Greater London. Jobs in Aldersbrook get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 764 places in Greater London are on our list, from the larger towns to small villages. London is on our list too, about 7 miles from Aldersbrook.
Jobs for window mastic in E11, E12 and E7 is quoted and booked the same way as anywhere else. We cover properties on Dover Road, Merlin Road and Belfry Road. Aldersbrook is on the A116, so it’s easy for us to get to. Neighbouring places we cover for window mastic include Bushwood Area of Leytonstone (1 mile west), Forest Gate (1 mile south), Wanstead (1 mile north), Leytonstone (1 mile west) and Redbridge (1 mile north-east). Within a short drive, we also cover London (7 miles south-west), City of Westminster (9 miles south-west), Marylebone (8 miles west), Kensington (11 miles south-west), St Pancras (7 miles west) and Shoreditch (5 miles south-west).
Near you in Aldersbrook
In Aldersbrook, that means homes and buildings near The George pub, Valentines Park and Tyndale Academy. The closest station to Aldersbrook is Wanstead Park station, about 0.9 miles south-west of the centre. Other landmarks nearby include Wanstead Hospital (1.5 miles north) and Passmore Edwards Museum (1.8 miles south-west). Open spaces near Aldersbrook include Hollow Pond and Old Ford Island.
What the job involves on each surface
Window sills
Every drop off the glass ends up on the sill, so the joints at each end and underneath matter. Each is cleaned out and resealed.
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour keeps the clean look.
Signs you need window mastic in Aldersbrook
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, so it comes away long before its time.
The most common problems we see are:
- Old mastic that has gone black or come away
- Sealant in the wrong colour for the frame
- Draughty joints inside around the window
- Rain getting in at the frame or under the sill
If you let a flat or house near Wanstead Park station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What to look for in a quote
- Is the old sealant removed completely?
- How much experience the applicator has
- What happens if the job turns out different
- How long to leave it before use