Greater London · England
Glazing & conservatory sealant in Mottingham, Greater London
Problem with your glazing joints in Mottingham? We remove the old material, prepare the joints and seal them properly.
- Leaking glazing joints on a rooflight
- Split or lifting silicone on glass
- Leaks where conservatory glass meets the frame
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from an hour or two to most of a day, depending on the size of the job and we leave things clean and tidy. 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 trace the leak and check it’s coming through a sealant joint.
- We cut out the failed silicone, taking care of the glass and frame.
- Surfaces are cleaned with a solvent suited to glass and the frame.
- Glazing silicone suited to the joint is applied and tooled.
- We check the joints and, where safe, run water over them.
How to prepare
- Mention any leaks or damp you’ve noticed
- Clear the area around the work
- Let us know about stairs, lifts or work at height
Get a quote
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Glazing silicone in Mottingham, done properly
We renew glazing silicone on conservatories, rooflights and glass panels, as well as frameless shower screens and glass balustrade bases. Each joint is cut out, cleaned and resealed. If you have new silicone smeared over old sealant and conservatory leaks at frame and glazing joints, we can put it right, whatever the surface.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Mottingham (SE9, SE12, BR1)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
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.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Questions from Mottingham
Do you work for landlords with property near Grove Park station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
Is parking an issue for glazing silicone in Mottingham?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you have insurance?
Yes. We’re fully insured.
Which silicone is used for glass joints?
We pick a glazing silicone to suit the materials. Neutral-cure products suit most glass and frames.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Is it possible to redo the silicone on a shower screen?
Yes. The old bead comes off without marking the glass, and the joints are cleaned and resealed.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you will get one quote.
Do you need glazing silicone in Mottingham?
Using a sealant not made for glass causes many failures. Some products don’t bond well to glass, and acetoxy types can attack some frame materials.
Look out for any of the following:
- Drips on the inside of a conservatory window
- Silicone pulling away from the glass
- New silicone smeared over old sealant
- Leaking glazing joints on a rooflight
Rented homes near Grove Park station change hands often, and leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies.
Questions to ask before booking
- Who turns up on the day
- What insurance they hold
- How long the guarantee is
- Is VAT in the price?
Places near Mottingham
More services for Mottingham
Why act early in Mottingham
A new conservatory roof is a big job. If the leak is a failed sealant joint, resealing is far simpler. If the roof is the problem, we will say so. In a flat in Mottingham, 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.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or email us.
Why choose Mr Mastic in Mottingham
- Anti-fungal silicone where joints get wet
- 180+ five-star Google reviews
- You choose the colour before work begins
- We’re fully insured
See what affects the cost and customer reviews.
Landlords, agents and businesses in Mottingham
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
What affects the quote in Mottingham
Your quote is based on your job. We take into account:
- When we can work, for business premises
- The old material and how stubborn it is
- How many areas need sealing
- The product the joint needs
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What we need to know
There’s no need for technical detail. Just tell us:
- Roughly how big the job is
- Whether it’s a home or a business
- Where the job is, and your postcode
- Any previous sealing or DIY work
For glazing silicone in Mottingham, 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.
Glazing silicone in Mottingham: local notes
With historic houses such as Eltham Palace (about 1.1 miles north-east) nearby, there’s older building stock in the area around Mottingham as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
Schools such as Marvels Lane Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Homes close to Jubilee International Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Mottingham is about 1 mile south-west of Eltham, in Greater London. We provide glazing silicone to homeowners, landlords and businesses in Mottingham and the surrounding area. Mottingham is one of 764 towns and villages in Greater London we cover for glazing silicone. Our London page covers work nearby, about 7 miles away.
Jobs for glazing silicone in SE9, SE12 and BR1 works the same way as everywhere else we cover. That includes homes and businesses on Horley Road, Dorset Road and Albert Road. Neighbouring places we cover for glazing silicone include Chinbrook (1 mile south-west), Grove Park (1 mile west), Coldharbour (1 mile east), Middle Park (1 mile north) and Horn Park (1 mile north-west). We also work in nearby towns such as London (7 miles north-west), City of Westminster (10 miles north-west), Marylebone (10 miles north-west), Kensington (11 miles north-west), St Pancras (9 miles north-west) and Shoreditch (8 miles north-west).
Landmarks near Mottingham
Typical jobs here are in homes near Colfe's School, Chinbrook Meadows and Haberdashers' Aske's Knights Academy, among other places. The nearest railway station is Grove Park station, roughly 0.7 miles west of the centre. A little further out are Greenwich Castle (3.5 miles north-west) and Prefab Museum (1.7 miles west). The countryside around Mottingham includes Summer Hill and The Tarn.
Surface by surface
Glass-to-frame joints
Where glass sits in a frame, silicone keeps water out. A failed bead lets water in.
Glass balustrade bases
Balustrade bases are exposed outdoors. A sound sealant joint keeps them tidy and dry.