Mastic sealing for building owners and managing agents in Keyhaven, Hampshire
Mastic sealing for building owners, managing agents and housing associations throughout Keyhaven and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Draughts at frames across a block
- Communal area joints that look neglected
- Brittle perimeter mastic across a building
Mastic sealing across Keyhaven
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How we handle mastic sealing in Keyhaven
Different joints need different sealants. Low-modulus neutral-cure silicone suits many window perimeters and external movement joints, and MS polymer sealants stick well to many substrates and often take paint. We’ll confirm the colours available for the specified product. Site teams most often ask us about damaged joints in communal entrances and corridors and the same joint failures repeated across a portfolio, on communal kitchens and washrooms, external wall and movement joints and balcony and threshold joints. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Keyhaven, that means joint design, primers and backing rod as standard.
For owners with a single building near Keyhaven, we plan to finish in one visit where possible. Send photographs of the frames and joints and we will give a fixed quote.
We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.
- Location
- Keyhaven (SO41)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Updated
- 3 November 2026
Honest limits
Not every problem is a sealant problem, and we’re upfront when that’s the case. These need a different solution:
- Substrate edges that need repairing first
- Water coming in from the roof or rainwater goods
- Glazing that needs replacing
If you are not sure, just call 01277 525 020 or email the details over and we’ll give you a straight answer.
Where we work in Keyhaven
- Balcony and threshold joints
- Communal entrances and stairwells
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- Window and door perimeters on blocks
- External wall and movement joints
Doing it in-house
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Owners, agents and contractors
Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.
CHAS accredited and a Constructionline member, we’re straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.
Places near Keyhaven
Also in Keyhaven
FAQs: Keyhaven
Can work in a care setting near Keyhaven go ahead while residents are there?
Yes. We agree rooms and times with the manager and work a few areas at a time. We follow the home’s own procedures throughout.
Is Keyhaven too small for you to travel to?
Not at all: smaller places are covered as well as towns. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.
How do you reach windows on upper floors?
Access is discussed and agreed before the quote is fixed. Tell us the building height and any access already in place and we’ll confirm the approach in the quote.
How long do sealant joints last?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
How soon can the area be used again?
We’ll confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.
What do you charge?
There isn’t a price list, because every site is different. Send photographs or drawings and we’ll price it at a fixed figure.
How do we ask for a quote?
You can use the quote form on this site; alternatively, call the office on 01277 525 020 or send photos by email. Photos, drawings or a joint schedule help us quote quickly.
When to call us in Keyhaven
Poor preparation explains many failed joints. Without clean, sound faces and a primer where the product needs one it comes away from one face.
Any of the following is a good reason to get the joints checked over:
- Worn sealant at communal door frames
- Open joints in brickwork or panels
- Leaks at window and door perimeters
- Window mastic that has split and shrunk
If your remit includes a building such as Milford-on-Sea Church of England Primary School, frame and door mastic can be programmed for the holidays.
What to look for in a quote
- Do they follow the manufacturer’s priming guidance?
- Their plan for phasing and protecting the area
- How joint depth will be controlled
- Which product they’ll use, and why it suits the joint
How a job runs
Before we leave any area, the masking comes off, the area is cleaned and every joint is checked with your site contact. Where the sealant needs time to cure before use, we tell you and sign the area. For work around Keyhaven, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- We check the asbestos register for older buildings and look at the joints.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- We finish each building before moving to the next.
Preparing the site
- Arrange parking or a loading space
- Have the specification and drawings to hand
- Make sure the joints can be reached
Quotes
For a fixed quote, give us a call on 01277 525 020 or send photos by email with the site address and an outline of the work. Our quote form is another easy route.
Read more
Why act early in Keyhaven
Dealing with failed joints one report at a time is slow and scattered. A planned programme treats each building once, under a single quote and a single programme. Converted and older buildings near places like Keyhaven tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.
The specified product makes a difference, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.
Why us?
- Fully insured, including public liability cover
- 12 months’ guarantee on every job
- Old sealant cut out, never sealed over
- Colours chosen to suit frames, cladding or finishes where possible
Take a look at how commercial sealant jobs are priced and our accreditations and insurance.
For owners and agents in Keyhaven
Keyhaven lies within about 1 mile of the sea. Blocks and commercial buildings facing the sea take the most weather on their window perimeters and external joints; plan inspections around that. Two care or nursing homes sit less than 2 miles from Keyhaven. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings.
Buildings close to stations like Lymington Town station, 3 miles north-east of Keyhaven, are often flats over shops, with frame mastic to keep sound. Older community buildings, Church of All Saints among them, often have frames of mixed ages whose mastic varies.
Keyhaven is about 3 miles south of Lymington, in Hampshire. Businesses, contractors and managing agents in Keyhaven use us for work on mastic joints, as part of our coverage of Hampshire. Across Hampshire, 723 places are covered, Keyhaven among them. Our Southampton page has more on work in that area.
We cover the SO41 postcode districts for mastic joints. We cover commercial and managed buildings on New Road, Keyhaven Road and Saltgrass Lane and the roads nearby. Close to Keyhaven, our area also takes in Milford on Sea (1 mile west), Lymore (1 mile north-west), Lower Pennington (1 mile north-east), Everton (2 miles north-west) and Pennington (2 miles north). Further afield, our area takes in Totton (14 miles north), Hythe (12 miles north-east), New Milton (4 miles north-west), Ringwood (13 miles north-west), Warsash (15 miles north-east) and Barton on Sea (4 miles west).
Landmarks near Keyhaven
Recent enquiries here include premises near The Gun Public House and Priestlands School, among other places. For rail, the closest station is Lymington Town station, about 3 miles north-east of the centre. Well-known places in the area include St Barbe Museum and Art Gallery (2.8 miles north-east) and Yarmouth Castle (3.3 miles east). The countryside around Keyhaven includes Milford on Sea LNR and Tennyson Down.