Hampshire · England
Penton Corner Window Mastic
Mastic around window and door frames, sills and patio doors in Penton Corner, with a one-year guarantee on every job. Ask us for a quote.
- Black, perished sealant on frames
- Gaps between the frame and the inside reveal
- Rushed sealant from a window installation
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Use gentle cleaners on frames and sealant
- Wipe condensation off the frames
- Avoid harsh chemicals near the mastic
- Repaint timber before it’s bare
Clean the frames with mild soapy water, and avoid solvent cleaners on the sealant.
Look out for the warning signs: 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.
Window mastic in Penton Corner
Every window and door frame has a gap around it, and mastic is what closes it. 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. If you are dealing with rain getting in at the frame or under the sill and draughts coming in around windows and doors, we can put it right, whatever the surface.
Somewhere as small as Penton Corner, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Penton Corner (SP11)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Windows and doors in Penton Corner
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Andover station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Schools such as Portway Junior School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Penton Corner is about 2 miles west of Andover, in Hampshire. If you need window mastic in Penton Corner, please phone 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Hampshire. Our Hampshire coverage runs to 683 places, and Penton Corner is one of them. Southampton is on our list too, about 21 miles from Penton Corner.
We work across the SP11 postcode area for window mastic and the streets around it. Whether your property is on Short Lane and Beech Close or a nearby road, our applicators can take on the job. Other places close to Penton Corner include Penton Grafton (1 mile north), Penton Mewsey (1 mile north), Red Post Bridge (1 mile south), Foxcotte (1 mile north-east) and Charlton (1 mile east). We also work in nearby towns such as Winchester (14 miles south-east), Romsey (15 miles south), Hyde (14 miles south-east), Tidworth (6 miles west), Weeke (13 miles south-east) and Stanmore (14 miles south-east).
Around Penton Corner
We work in homes and buildings around Harrow Way Community School and White Hart Public House, among other places. Penton Corner’s nearest station is Andover station, about 1.6 miles east. Other landmarks nearby include Andover Museum (2.3 miles east) and Andover War Memorial Hospital (1.5 miles east). Green spaces nearby include Quarley Hill and Anton Lakes.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Also near Penton Corner
Also in Penton Corner
Why it’s worth doing now in Penton Corner
Running fresh sealant over the old joint is tempting, but it won’t grip old, dirty sealant. It soon lifts and the leak carries on behind it. Proper resealing starts with removing the old joint. In a small place like Penton Corner, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before any work starts, so you know where you stand.
Why choose Mr Mastic in Penton Corner
- We are fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- White, clear, grey or coloured to suit, where the product allows
- Sealant colour chosen to suit
Take a look at our cost guide and our reviews.
What we’re called out for in Penton Corner
Some failures date back to when the windows were fitted. Sealant run over dust, wet brick or loose mortar didn’t grip properly, so it comes away long before its time.
Most people get in touch when they notice something like this:
- Cracked internal joints between frame and plaster
- Cold air getting in at the frame edge
- Black, perished sealant on frames
- White mastic on grey or black frames
For an older house near a landmark such as Holy Trinity Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before booking
- How much experience the applicator has
- How the colour is chosen
- When the joint can take water or movement
- What happens if they find a problem under the old sealant
FAQs for Penton Corner
Do you cover smaller places like Penton Corner?
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.
Can you help a landlord with a rental near Andover station?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Is the new sealant paintable?
That depends on the product. Some hybrid sealants can be painted; silicone can’t. Tell us if you are decorating and we’ll choose accordingly.
How many windows can you do in a day?
That depends on the number of frames, how they’re reached and the state of the old mastic. You will know the timing when we quote.
Where do you work from?
We work from Crawley. Our applicators cover Penton Corner.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
How the visit works
Once we’re on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a few frames, or a day or more for a whole house. In a small place like Penton Corner, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Before we arrive
- Let us know about parking restrictions
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
Getting a quote
We do not publish a price list, because every job is different. Instead, we give you a clear price for your job. To arrange one, ring 0345 464 0079 or send us an email.
Advice
What the job involves on each surface
Composite doors
A composite door usually sits in a plastic outer frame, so its perimeter joint is sealed much like a window. We match the colour to the frame.
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
Honest limits
New sealant cannot fix everything, and we’d rather say so up front. It won’t solve:
- Penetrating damp from a failed cavity tray or render
- A frame that has rotted at the joint
- Draughts through the window seals rather than the frame
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Window sills
- Timber windows & doors
- Aluminium frames
- Composite doors
- uPVC windows
- Patio & French doors