West Sussex · England
Tisman's Common Window Mastic
Mastic around window and door frames, sills and patio doors for Tisman's Common, backed by a one-year guarantee. Ask us for a quote.
- Hard, cracked sealant around windows
- Cracked sealant at the sill ends
- Mastic that’s falling out in pieces
What sealant work can’t fix
Before booking, it’s worth knowing the limits too:
- Penetrating damp from a failed cavity tray or render
- Condensation trapped between the panes
- Worn gaskets, brush seals or a door that has dropped
Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Patio & French doors
- Composite doors
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Window sills
Window mastic in Tisman's Common, done properly
From a single sill to a whole house of windows, you’ll get a clear quote before we start. To get one, phone 0345 464 0079 or send us an email with the number of frames and any access details for window mastic in Tisman's Common. Common call-outs are for water coming in at the bottom corners of a door and hard, cracked sealant around windows, on aluminium frames, timber windows & doors and composite doors.
Around Tisman's Common, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
Whatever the size of the job, you get the same one-year guarantee.
- Location
- Tisman's Common (RH12)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Keep paint and stain on wooden frames in good order
- Keep jet washers away from the mastic
- Check the mastic once a year
- Keep paint off silicone joints
A yearly look round the frames is enough. Small splits are simple to catch before they leak.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
Why deal with it now?
Failed mastic is not a reason to replace sound windows. Where the frames are sound, new mastic normally deals with draughts and leaks at the edges. Problems with the glass or gaskets are for a window company, and we will say so. Where a wall is exposed, as many are in small places like Tisman's Common, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Call for a quick quote and we will go through it with you.
Why book with us
- Rated 4.9 stars on Google
- Homes, businesses and hotels
- Fully insured
- ARBOMaster approved applicator
Take a look at how sealant jobs are priced or our reviews.
Can I do it myself?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
FAQs for Tisman's Common
Will you come out to Tisman's Common?
Yes, Tisman's Common is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is window mastic in Tisman's Common guaranteed?
All our work, in Tisman's Common and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Where is Mr Mastic based?
We’re based in Crawley, and we work across South East England, London and Scotland.
Do you seal inside as well as outside?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
What sealant do you use?
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 have worked for hotels, offices and other businesses and we’re fully insured.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Towns and villages near Tisman's Common
More services for Tisman's Common
How we quote for window mastic
Your quote is based on your job. We look at:
- Whether the work is at height
- The product the joint needs
- Any working-time requirements on site
- How many rooms, windows or areas are involved
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. We give a clear quote before any work starts.
What we need to know
To help us quote quickly, let us know:
- Whether it has been sealed before
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
- Photos by email, if that’s easy
If you’re in Tisman's Common and need window mastic, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
For anyone letting property in or around Tisman's Common, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
How it works
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and clear up. Most jobs take a few hours for a few frames, or a day or more for a whole house. Somewhere as small as Tisman's Common, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Mention any leaks or damp you’ve noticed
- Keep children and pets away from the work area
Get 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’re ready, phone 0345 464 0079 or drop us an email.
Advice
Windows and doors in Tisman's Common
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Schools such as Pennthorpe School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Homes close to St John the Baptist include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Tisman's Common is about 7 miles west of Horsham, in West Sussex. Jobs in Tisman's Common get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our West Sussex coverage runs to 371 places, Tisman's Common among them. There’s also a page for Crawley, roughly 12 miles from Tisman's Common.
Postcode districts we cover here for window mastic: RH12. You will find streets such as Hornshill Lane and Loxwood Road. Other places close to Tisman's Common include Bucks Green (1 mile east), Rudgwick (1 mile east), The Haven (2 miles south-east), Slinfold (3 miles south-east) and Five Oaks (3 miles south-east). Larger places within reach include Crawley (12 miles east), Horsham (7 miles east), Broadfield (12 miles east), Storrington (11 miles south), Billingshurst (5 miles south) and Bewbush (11 miles east).
Landmarks near Tisman's Common
In Tisman's Common, that means homes and buildings near Rudgwick Primary School and The Queen's Head Public House.