Hertfordshire · England
Window & door mastic in Felden, Hertfordshire
We cover Felden for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly.
- Cracked or shrunken mastic around the frame
- Cold air getting in at the frame edge
- Sealant in the wrong colour for the frame
Quotes for window mastic in Felden
Jobs vary more than people expect. The main factors:
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- Any working-time requirements on site
- The type of sealant required
Combining jobs into one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
- Whether it has been sealed before
- Roughly how big the job is
For window mastic in Felden, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
How we handle window mastic in Felden
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that can’t move properly, so we fit backing rod to set the right depth. That way the new bead bonds to the frame and the wall only. Typical jobs include cracked or shrunken mastic around the frame and leaking joints at the ends of sills, on aluminium frames, uPVC windows and composite doors.
In smaller places like Felden, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. Each frame material needs the right sealant against the right wall.
Big or small, it’s backed by our one-year guarantee in Felden and across Hertfordshire.
- Where
- Felden (HP3, WD4)
- Wider area
- Hertfordshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Frames and glazing around Felden
With historic houses such as High Elms Manor (about 3.4 miles south-east) nearby, there’s older building stock in the area around Felden as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. Felden is part of Hemel Hempstead, one of the post-war new towns. With many homes from the post-war decades, replacement windows and doors are common. That mastic ages as well, and sills and frame heads are where leaks start.
Schools such as Nash Mills Church of England Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Apsley station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. For an older house near a landmark such as Church of St Mary, the joint between an old wall and a newer frame is usually the first place rain gets in.
Felden is about 2 miles south of Hemel Hempstead, in Hertfordshire. Anywhere in HP3, we cover window mastic for homes and businesses. Our area takes in 381 places across Hertfordshire. There’s also a page for London, roughly 22 miles from Felden.
Our applicators cover all of HP3 and WD4 for window mastic and the streets around it. That includes homes and businesses on Pond Road, Rose Lane and Lower Road and the roads around them. We also cover the places around Felden: Nash Mills (1 mile east), Rucklers Lane (1 mile south), Apsley (1 mile north-west), Bennetts End (1 mile north-east) and Kings Langley (1 mile south-east). Further out, we also cover Watford (5 miles south-east), St Albans (6 miles east), Welwyn Garden City (12 miles east), Harpenden (8 miles north-east), Hatfield (10 miles east) and Borehamwood (9 miles south-east).
What’s near Felden
In Felden, that means homes and buildings near Kings Langley School and The Paper Mill pub and the streets around them. There’s a railway station in Felden itself: Apsley station. Nearby you will also find Hemel Hempstead Hospital (1.5 miles north). Open spaces near Felden include Long Deans and Verulamium Lake.
Nearby places to Felden
More services for Felden
What we cannot put right
A few problems are outside what sealant work can do:
- Penetrating damp from a failed cavity tray or render
- Worn gaskets, brush seals or a door that has dropped
- Broken hinges, locks or handles
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Where we work in Felden
- Aluminium frames
- Window sills
- uPVC windows
- Timber windows & doors
- Patio & French doors
- Composite doors
Landlord and commercial work in Felden
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
The process
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a few frames, or a day or more for a whole house, depending on how much there is to do. For a job in Felden, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Finally we tidy up and check each joint.
Before we arrive
- Clear items away from the joints we’re working on
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about parking restrictions
Ask for a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
Advice
Why it’s worth doing now in Felden
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. A reseal is a much smaller job. In an older home around Felden, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why Felden clients choose us
- Full insurance on every job
- Rated 4.9 stars on Google
- Homes, businesses and hotels
- Anti-fungal silicone where joints get wet
See how sealant jobs are priced and our reviews.
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Do not paint over the silicone
- Keep drainage slots and sill grooves clear
- Avoid blasting the frames with a pressure washer
- Look round the frames every year or so
Most silicone sealants will not take paint, so mention any painting plans before we start. There are paintable sealants for joints that need it.
Signs to watch for: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
Common questions in Felden
Is it worth replacing old sealant in an older home in Felden?
Usually, yes, if it’s cracked, shrunk, mouldy or coming away. The key is cutting all the old sealant out, as new sealant will not bond to it.
Is Felden within the area you cover?
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 quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
How much does window mastic cost in Felden?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Will new mastic stop draughts?
Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.
I’m a tenant. Can you help?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme.
Is the work guaranteed?
Yes. Our 12-month guarantee covers every job.
Can I do it myself?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.