Buckinghamshire · England
Window Mastic in Marlow
Professional window mastic in and around Marlow, with old sealant always removed completely and a 12-month guarantee.
- Cold air getting in at the frame edge
- Untidy mastic left by window fitters
- Water coming in at the bottom corners of a door
Questions from Marlow
Can you do window mastic in Marlow?
Yes. Our work covers London and the South East, and Marlow is part of that. Just call 0345 464 0079 or email us with a few details of the job.
Is there a guarantee on window mastic in Marlow?
Every job comes with our one-year guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you seal the gap between the frame and the plaster indoors?
Yes. Draughts often come through the inside gap too, so sealing both is often worthwhile.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Window mastic in Marlow, done properly
Homes in Marlow have every kind of window: uPVC, aluminium, timber and composite, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. If you are dealing with draughts coming in around windows and doors and old mastic that has gone black or come away, we can help, whatever the surface.
In a town like Marlow, the windows on the most exposed side of a house take the brunt of the rain, so the mastic there tends to fail first. Checking every frame, not just the obvious one, is time well spent.
A 12-month guarantee comes as standard.
- Place
- Marlow (SL7)
- Region
- Buckinghamshire
- Guarantee
- A year, on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Quotes for window mastic in Marlow
Every job gets its own quote. These are the things that affect it:
- Access and height
- How many rooms, windows or areas are involved
- How much there is to do
- Working hours on commercial sites
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What we need to know
What to tell us when you ask for a quote:
- A few pictures by email, if you can
- Whether it has been sealed before
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
Getting a quote is simple: tell us what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
How to look after the new joints
A little care helps the new joints last. We recommend:
- Keep drainage slots and sill grooves clear
- Don’t use solvent cleaners on the joint
- Wash the frames with mild soapy water
- Don’t aim a pressure washer at the joints
Keep the new mastic undisturbed while it cures, for as long as we advise. Don’t point a pressure washer at the joints.
Wet, windy weather is when failed mastic shows itself, but resealing works best in dry conditions. Sorting cracked mastic early means the joint is sound before the bad weather.
Frames and glazing around Marlow
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Harleyford Manor (about 2 miles south-west) nearby, there’s older building stock in the area around Marlow 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’s traditional sand mastic.
Schools such as Holy Trinity Church of England (Aided) School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. In the older streets around Congregational Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Marlow is about 4 miles south of High Wycombe, in Buckinghamshire. For window mastic in and around Marlow, it’s easy to get a quote: please phone 0345 464 0079 or email us. We are based in Crawley and cover Buckinghamshire. Marlow is one of 263 towns and villages in Buckinghamshire where we work for window mastic. We also work in Reading, about 12 miles from Marlow.
We cover every part of SL7 for window mastic and the streets around it. If you need window mastic at a property on Station Road, High Street and Willowmead Square or a nearby road, we can help. Marlow sits on or near the A404 and B482, which makes travel easy. Close by, we work in Bisham (1 mile south), Marlow Bottom (1 mile north), Burroughs Grove (1 mile north), Temple (2 miles south) and Little Marlow (2 miles north-east). Within a short drive, we also cover High Wycombe (4 miles north), Chesham (12 miles north-east), Amersham (10 miles north-east), Beaconsfield (6 miles north-east), Chalfont St Peter (10 miles east) and Princes Risborough (11 miles north). Being one of Buckinghamshire’s larger places, Marlow has homes, rented property and businesses of every kind.
Around Marlow
We work in homes and buildings around Butcher's Tap and Sir William Borlase's Grammar School. Marlow has its own railway station: Marlow station. Other landmarks nearby include Eden (4 miles north) and High Wycombe Castle (4.1 miles north). For a walk, there’s Carpenter's Wood.
Honest limits
Before booking, it’s worth knowing the limits:
- Soft or decayed wood in the frame
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A sash or casement that will not close properly
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Window sills
- Aluminium frames
- Timber windows & doors
- Composite doors
- uPVC windows
- Patio & French doors
Different surfaces, different methods
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
Patio & French doors
Patio and French doors have the longest joints on most houses. Most leaks start at the bottom corners, so they get particular care.
Common problems we fix in Marlow
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, and a gap filled solid cannot flex. That is what backing rod is for.
The problems people usually mention when they call are:
- Hard, cracked sealant around windows
- Sealant in the wrong colour for the frame
- Black, perished sealant on frames
- Cracked sealant at the sill ends
For landlords with property near Marlow station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Before booking anyone
- How much experience the applicator has
- Are they insured?
- How the surfaces are prepared before sealing
- Whether you can choose the colour
Towns and villages near Marlow
More services for Marlow
How it works
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. It normally takes a morning for a couple of windows and a door. For a job in Marlow, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
How to prepare
- Mention any leaks or damp you’ve noticed
- Tell us about access, such as stairs, a lift or high-level joints
- Keep children and pets away from the work area
How to get a quote
If you are in Marlow and need window mastic, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Advice
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.