Surrey · England
Window & door mastic in Walliswood, Surrey
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in Walliswood. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked sealant at the sill ends
- Old mastic that has gone black or come away
- Cracked internal joints between frame and plaster
About our window mastic in Walliswood
Every window and door frame has a gap around it, and mastic is what closes it. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We work on composite doors, patio & French doors and window sills, and common reasons people get in touch are whistling draughts around closed windows and cracked or shrunken mastic around the frame.
Homes in small places like Walliswood often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
Every job comes with our 12-month guarantee.
- Place
- Walliswood (RH5)
- Region
- Surrey
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Walliswood
Do you cover smaller places like Walliswood?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
I let a flat near Ockley station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Walliswood, along with the rest of our area.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
What do you put in the joint?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses.
Does someone need to be in?
That depends on where the joints are. Inside work needs someone to give us access.
Can resealing stop a draught around my window?
Yes, where the draught is at the frame edge. We check where the draught is before work begins.
Landlords, agents and businesses in Walliswood
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Letting agents and landlords in Walliswood can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
How the job changes by surface
Patio & French doors
Water at the foot of a door frame is not always the mastic: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We look for the cause first.
Composite doors
Front doors take the weather head on, and the top and bottom corners tend to fail first. We pay most attention there.
Why act early in Walliswood
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. Older cottages and farmhouses around Walliswood can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why book with us
- Fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- We leave the area clean and tidy
- Every job guaranteed for a year
Read what affects the cost or our reviews.
How to look after the new joints
To keep the joints looking good and working properly:
- Avoid blasting the frames with a pressure washer
- Keep drainage slots and sill grooves clear
- Wash the frames with mild soapy water
- Check the mastic once a year
Clean the frames with mild soapy water, and keep solvents and harsh chemicals off the joint.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and a cold room gets colder. Resealing closes it.
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
How it works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The work itself takes a few hours for a handful of frames, longer for a whole house. Somewhere as small as Walliswood, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Preparing for the visit
- On commercial sites, let us know about site rules
- Where the joints are inside, avoid wetting them before we arrive
- Clear the area around the work
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or drop us an email.
Advice
Nearby places to Walliswood
What else we do in Walliswood
Window mastic in Walliswood: local notes
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to Church of St John the Baptist include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Walliswood is about 6 miles north-west of Horsham, in Surrey. For window mastic in and around Walliswood, it’s easy to get a quote: please call 0345 464 0079 or email us. We cover Surrey from our Crawley base, Walliswood included. Walliswood is one of 395 places in Surrey we cover. There’s also a page for Crawley, roughly 9 miles from Walliswood.
Here we cover the RH5 postcode area for window mastic. Whether your property is on Horsham Road, Standon Lane and Oakfields or a nearby road, we can help. Neighbouring places we cover for window mastic include Mayes Green (1 mile north), Ewhurst Green (2 miles north-west), Ellen's Green (2 miles south-west), Ewhurst (2 miles north-west) and Cranleigh (4 miles west). Within a short drive, we also cover Guildford (11 miles north-west), Woking (15 miles north-west), Epsom (15 miles north), Horley (11 miles east), Redhill (12 miles north-east) and Reigate (11 miles north-east).
Around Walliswood
In Walliswood, that means homes and buildings near Wallis Wood and The Scarlett Arms Public House. The closest station to Walliswood is Ockley station, about 3.1 miles north-east. Nearby you will also find Abinger Castle (4.8 miles north) and Horsham Hospital (5.5 miles south-east). Green spaces nearby include Vann Lake and Leith Hill.
Do you need window mastic in Walliswood?
Water runs down the glass onto the sill, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
The problems people generally mention when they call are:
- Cracked or shrunken mastic around the frame
- Gaps where the sill meets the wall
- Cold air getting in at the frame edge
- White mastic on grey or black frames
Rented homes near Ockley station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Questions to ask before you book
- How long the guarantee is
- Who does the work, and how experienced they are
- When the joint can take water or movement
- What product goes in the joint