The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Facade and window perimeter sealing in Balmerlawn, Hampshire

We carry out facade joint and window perimeter sealing on commercial buildings in Balmerlawn and the surrounding area. Send details for a fixed quote.

  • Unsightly perimeter sealant on a visible elevation
  • Sealant pulling away from frames or panels
  • Weathered facade joints that have lost their grip
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Facade sealing across Balmerlawn

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

On site: what to expect

On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before anything is cut or cleaned, and the work usually takes anything from a single day to several weeks, depending on joint lengths, access and the weather. Smaller jobs around Balmerlawn can be grouped with others nearby, which keeps travel down. A fixed quote is given before anything starts.

  1. Access, site rules and timing are settled with the client up front.
  2. We only seal when joints are dry and within the product’s temperature range.
  3. We remove the old bead and check the edges are sound.
  4. Joints are cleaned, primed if required and fitted with backing rod.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. Once signed off, the work carries our 12-month guarantee.

Getting the site ready

  • Share the asbestos register for older buildings
  • Point out parking and an unloading spot
  • Tell us your opening times and when work is allowed

Getting a fixed quote

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, speak to us on 01277 525 020 or email us.

Get a quick quote

Advice

Facade sealing in Balmerlawn

We are often asked to look at water coming in around frames. Failed perimeter sealant is a frequent cause, though that isn’t the only cause. We will tell you if we think the leak is coming from somewhere sealant won’t fix. We work on coping and flashing joints, stone and brick facade joints and cladding panel joints, and the failures we are asked to look at most are facade joints cracked through the middle and unsightly perimeter sealant on a visible elevation. Most enquiries from Balmerlawn start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

For a site near Balmerlawn, the mastic visit is planned so the right sealants, primers and backing rod are on hand. Send drawings or photographs and the programme and we’ll quote to suit.

The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Balmerlawn (SO42)
Wider area
Hampshire
Cover
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

What happens if it’s left?

Open facade joints also let air and dirt through: draughts around frames add to heating costs and complaints. Resealing deals with the draught as well as the leak. Halls, stores and units around places like Balmerlawn may not be checked every day, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote.

Why appoint us

  • One number for every site we cover
  • CSCS-carded applicators
  • Fully insured
  • Specification-led, product-correct work

Read what affects the cost and how we’re accredited.

When it isn’t the sealant

Being straight saves everyone time. New sealant won’t cure:

  • Damp caused by condensation inside the building
  • Arranging specialist high-level access, which is planned with the client
  • Joints whose design needs changing by the specifier

If you are not sure, just ring 01277 525 020 or send details through our quote form and we’ll give you a straight answer before you book.

Joints and surfaces we work on

  • Cladding panel joints
  • Stone and brick facade joints
  • Coping and flashing joints
  • Window and door perimeters
  • Perimeter joints where frames meet the structure
  • Shopfront frames

Building owners, agents and FMs in Balmerlawn

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, and each stage is agreed with your contact.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in Balmerlawn can sit alongside others in a wider programme across Hampshire.

Facades, frames and programmes in Balmerlawn

The South East is one of the drier parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, so we time external mastic for dry faces and agree it with the site team. The area within 2 miles of Balmerlawn holds plenty of hotels. When hotels extend or refit, the work is usually squeezed between peak periods, mastic included.

Hotels like Balmer Lawn Hotel (under half a mile west of Balmerlawn) rarely close for long, so refurbishment mastic is phased floor by floor. When a school such as Brockenhurst Church of England Primary School is extended or refurbished, the mastic package is often squeezed into the holidays. Older buildings in the area around Balmerlawn, such as Beaulieu Palace House, 4.9 miles east of Balmerlawn, need care when sealed: the product has to suit soft or historic materials.

Balmerlawn is about 5 miles north of Lymington, in Hampshire. Any commercial site in Balmerlawn is covered. Balmerlawn is one of 723 places in Hampshire on our list. Southampton is covered too, around 10 miles from Balmerlawn.

We take on facade joints across the SO42 postcode area, whatever the building. Sites close to Balmerlawn are covered too, including Brockenhurst (1 mile south-west), Setley (1 mile south), South Weirs (2 miles south-west), Lyndhurst (3 miles north) and Emery Down (3 miles north). Nearby towns on our patch include Eastleigh (14 miles north-east), Totton (7 miles north), Chandler's Ford (13 miles north-east), Hedge End (13 miles north-east), Lymington (5 miles south) and Romsey (12 miles north).

What’s near Balmerlawn

In Balmerlawn, that means premises near Rose And Crown Hotel and the streets around them. The nearest railway station is Brockenhurst station, roughly 0.9 miles south-west of the centre. Other landmarks nearby include Lymington New Forest Hospital (4 miles south).

Map of Balmerlawn © OpenStreetMap contributors

What sets the cost

These are the things that shape the price:

  • Any access equipment needed
  • Phasing around occupants
  • Travel to remote or island sites
  • Site requirements such as inductions and permits

The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.

What we need to price the job

Whether it’s one area or a whole building, these details speed things up:

  • Approximate linear metres or a joint schedule
  • Whether the building will be occupied during the work
  • Where the site is, with the postcode
  • Any dates the work must fit around

The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or ring 01277 525 020 or send details through our quote form to discuss it first.

Your questions answered

Can work at a site such as Brockenhurst College fit around teaching?

Yes. We plan campus work around teaching, exams and residence turnarounds. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Would you work within a site like Lymington New Forest Hospital?

Yes. Healthcare sites are among the places we work. Work is phased so departments keep running, under the site’s own rules.

Does weather matter for sealant work?

It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

Will you check whether the sealant is causing the leak?

Yes. We check the sealant joints and report what we find as part of pricing. Where the cause seems to be elsewhere, we’d rather tell you than reseal pointlessly.

Do you replace failed glazing units?

No. That work needs a glazing specialist. We reseal window perimeters, panel joints and frame-to-structure perimeters across the facade.

Do you have public liability insurance?

Yes. We are fully insured, including public liability cover.

Do you use silicone for external joints?

Most facade and window perimeter joints take a low-modulus neutral-cure silicone. Hybrid or MS polymer, polyurethane and polysulphide sealants suit others.

Aftercare for building managers

Regular inspection catches problems early. In particular:

  • Report water ingress at frames as soon as it shows
  • Avoid patch repairs on failed facade joints
  • Share access with other external trades
  • Ask about asbestos in pre-2000 mastic

Let the new sealant cure before washing the facade or windows near it. Keep high-pressure jets and strong chemicals away from new sealant, so brief your window cleaners.

Don’t wait for a full elevation to fail. A few metres resealed promptly can stop water damage spreading behind the facade.

Accreditations

Trusted. Accredited. Insured.