Hampshire · England
Window & door mastic in Crockerhill, Hampshire
We cover Crockerhill for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Rushed sealant from a window installation
- Old mastic that has gone black or come away
- Draughts coming in around windows and doors
How it works
On the day, we look over the joints with you first. We protect the surfaces around the joints before we start. The work generally takes a morning for a couple of windows and a door. Somewhere like Crockerhill needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Keep children and pets away from the work area
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
Get a quote
Need a quote? Please ring 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
About our window mastic in Crockerhill
From a single sill to a whole house of windows, the work is priced before anything is done. Just phone 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached. If you have cold air getting in at the frame edge and rushed sealant from a window installation, we can help.
Mastic can only go onto a dry, clean joint, so window work in Crockerhill is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
There’s a 12-month guarantee on every job.
- Location
- Crockerhill (PO17)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Crockerhill
Also in Crockerhill
What sealant work cannot fix
Sealant is not the answer to every problem, and we will tell you before we start. It won’t solve:
- Damp coming through the wall itself rather than the frame joint
- Rotten timber, which needs a joiner first
- Misting between the panes of a double-glazed unit (that needs a new unit)
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Timber windows & doors
- Aluminium frames
- Composite doors
- Patio & French doors
- Window sills
- uPVC windows
Window mastic in Crockerhill: local notes
Crockerhill is within about 3 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as The Henry Cort Community College, the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Church of St Nicholas, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Letting a property close to Fareham station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Crockerhill is about 2 miles north of Fareham, in Hampshire. We provide window mastic to homes and businesses in Crockerhill. Across Hampshire, we cover 683 places, Crockerhill among them. You can also see our page for Portsmouth, about 7 miles away.
Our applicators cover all of PO17 for window mastic and the streets around it. We also cover Welborne (1 mile west), Wickham Common (1 mile north-east), North Fareham (1 mile south), Hundred Acres (2 miles north-east) and North Boarhunt (2 miles north-east). We also work in nearby towns such as Winchester (14 miles north-west), Gosport (6 miles south), Havant (9 miles east), Eastleigh (9 miles north-west), Horndean (8 miles east) and Totton (14 miles west).
Local landmarks in Crockerhill
Crockerhill’s nearest station is Fareham station, roughly 2.1 miles south. Other landmarks nearby include Knowle Hospital (1 mile west) and Carron Row Farm Museum (2.8 miles south-west). Green spaces nearby include St Clair's Meadow and Portsdown Hill.
Why deal with it now?
Working on frames from a ladder with a sealant gun isn’t easy, especially on upper floors. A professional job is cut out properly, backed where needed and finished neatly, using a product chosen for the frame and wall. In a small place like Crockerhill, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Doing several joints on one visit is normally more efficient than separate visits. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Crockerhill
- White, clear, grey or coloured to suit, where the product allows
- A sealant colour to suit the surroundings
- Domestic, commercial and hotel work
- Arbo and Everbuild products
Read what affects the cost and what customers say.
For landlords and businesses
If you manage several properties in or around Crockerhill, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Surface by surface
Patio & French doors
Water at the foot of a door frame isn’t always the mastic: blocked drain slots, worn brush seals and threshold details can let water in too. We look for the cause first.
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Crockerhill questions
Can you help a landlord with a rental near Fareham station?
Yes. We work for landlords and letting agents as well as homeowners. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Is Crockerhill within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers 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’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will tell you what we’re using.
Is the new sealant paintable?
Not normally, if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
Do the sealants smell?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
Where are you based?
Mr Mastic is based in Crawley. We cover Crockerhill and the rest of Hampshire.
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Keeping the joints in good condition
So the new joints stay in good condition:
- Don’t use solvent cleaners on the joint
- Don’t aim a pressure washer at the joints
- Ventilate rooms so frames do not stay wet inside
- Clean frames with a soft cloth and soapy water
Check the drainage slots in the frames aren’t blocked, so rain drains out rather than building up at the sealant.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.