Hampshire · England
Window Mastic in Worthy Down
Mastic around window and door frames, sills and patio doors for Worthy Down, backed by a one-year guarantee. Ask us for a quote.
- Mastic that’s falling out in pieces
- Cold air getting in at the frame edge
- Cracked internal joints between frame and plaster
Common problems we fix in Worthy Down
Frames are never completely still. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the brick or render around it hardly moves. If the sealant can’t stretch, it splits.
Signs it’s time to call us include:
- Hard, cracked sealant around windows
- Gaps left after new windows were fitted
- Cracked sealant at the sill ends
- Mastic that is falling out in pieces
For landlords with property near Winchester station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Before booking anyone
- Whether they seal over old material or remove it
- How the surfaces are prepared before sealing
- Whether they’re fully insured
- How hidden problems are handled
Window mastic in Worthy Down
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. We’re often asked to deal with water coming in at the bottom corners of a door and a bead that doesn’t match the frame, across uPVC windows, timber windows & doors and window sills.
Outdoor sealant needs dry, clean surfaces, so work on frames around Worthy Down is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Your job is guaranteed for a year, as with all our work.
- Place
- Worthy Down (SO21)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What affects the quote in Worthy Down
The price is agreed before any work begins. It’s based on:
- Any mould that needs treating
- The size of the job
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Asking for a quote
When you contact us, it’s useful to know:
- The rough size of the job
- Photos by email, if that is easy
- Where the job is, and your postcode
- Any previous sealing or DIY work
For a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
How the visit works
We bring everything the job needs with us. Once we have agreed what’s being done, we protect the area and start. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. In a small place like Worthy Down, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
How to prepare
- Clear the area around the work
- Tell us about any water getting in
- Mention any sign-in or site rules at work premises
How to get a quote
Asking for a quote is easy: let us know what needs doing and where. A few photos by email make the job easier to understand, and we’ll take it from there.
Related advice
FAQs for Worthy Down
I let a flat near Winchester station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Do you cover smaller places like Worthy Down?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
What do you need from me for a quote?
Only a few details: the address or postcode, what’s wrong and any access issues. Then call 0345 464 0079 or send us an email.
How do I get a quote for window mastic in Worthy Down?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Can you match the sealant to my frames?
Yes. Grey and black frames get grey or black sealant, and wood-effect frames generally suit brown.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint before we leave.
Do you guarantee window mastic?
Yes. Every job comes with our one-year guarantee, and we’re ARBOMaster approved applicators.
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- A frame that has rotted at the joint
- Worn gaskets, brush seals or a door that has dropped
- Penetrating damp from a failed cavity tray or render
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Timber windows & doors
- Aluminium frames
- Window sills
- Composite doors
- Patio & French doors
- uPVC windows
Landlords, agents and businesses in Worthy Down
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too in Worthy Down and across Hampshire. We can quote a run of properties together, and we’re fully insured for the work.
Window mastic in Worthy Down: local notes
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as St Margaret's, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Schools such as South Wonston Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Worthy Down is about 4 miles north of Winchester, in Hampshire. Every kind of property in Worthy Down can book us for window mastic, old or new, large or small. The work is guaranteed for a year. Worthy Down is one of 683 places in Hampshire where we work. Our Southampton page covers work nearby, about 14 miles away.
All of SO21 is within our area for window mastic, from the main roads to the quietest streets. Streets in the area include Coopers Close, Coate Drive and Wellesley Drive. Neighbouring places we cover for window mastic include South Wonston (1 mile north), Springvale (2 miles south-east), Crawley (3 miles west), Sutton Scotney (3 miles north) and Stoke Charity (3 miles north-east). We also work in nearby towns such as Basingstoke (15 miles north-east), Winchester (4 miles south), Eastleigh (10 miles south), Andover (9 miles north-west), Totton (15 miles south-west) and Chandler's Ford (9 miles south).
Around Worthy Down
We work in homes and buildings around Henry Beaufort School, among other places. The closest station to Worthy Down is Winchester station, roughly 3.2 miles south of the centre. Other landmarks nearby include Royal Hampshire County Hospital (3.5 miles south) and Royal Observer Corps Museum (2.7 miles south-east). Green spaces nearby include Winnall Moors.
Also near Worthy Down
Other services in Worthy Down
Surface by surface
Patio & French doors
Water at the foot of a door frame isn’t always the mastic: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We look for the cause first.
Window sills
Where a sill meets brick or render, the ends often crack first. We reseal them so rain can’t run into the wall.