Mastic sealing for building owners and managing agents in Cadnam, Hampshire
Mastic sealing for building owners, managing agents and housing associations across Cadnam, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Patchy repairs in mismatched sealant
- Worn sealant at communal door frames
- Failed external movement joints
Mastic sealing across Cadnam
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Common questions from Cadnam clients
Do you cover business parks and estates near Cadnam, such as Mortimer Trading Estate?
Yes. Estates, retail parks and business parks around Cadnam, Mortimer Trading Estate among them, are all within reach. To start, just ring 01277 525 020 or email the details over with the unit, the joints involved and your access times.
Do you work for managing agents with blocks near Ashurst New Forest station?
Yes. Blocks of any size are within what we do. Send the address, photos of the elevations and your access arrangements, and we will give a fixed quote.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.
Do you work in Cadnam?
Yes. Sites across Cadnam are covered, and the same phone number covers every area.
Can you send RAMS and CSCS details before starting?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We hold CHAS accreditation and Constructionline membership.
Can you work to our specification?
Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.
How long does a job like this take?
We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.
About our mastic sealing in Cadnam
Blocks are lived in, so access and disruption have to be thought through. The sequence, the areas and the dates are settled with you so you can let residents know what is happening. Entrances and stairwells are kept in use while we work. If you are dealing with a mix of products and colours from past repairs and window mastic that has split and shrunk, we can put it right, on communal kitchens and washrooms, balcony and threshold joints and window and door perimeters on blocks alike. Most enquiries from Cadnam 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.
Rural conversions near places like Cadnam often set modern frames into older stone, flint or brick. The mastic needs to suit an irregular masonry face and the look of the building.
Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Place
- Cadnam (SO40)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Places near Cadnam
Also in Cadnam
After the work
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. We suggest:
- Start inspections with the most exposed faces
- Track which buildings were done and when
- Avoid piecemeal callouts where you can
- Ask residents or tenants to report leaks and draughts early
Keep records of when each building was resealed. That makes future programmes easier to plan and shows what was done.
Left open, joint edges in render, brick or frames can deteriorate. Then the edges may need repairing first and the job grows.
Commercial clients in Cadnam
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.
As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
Block-wide mastic in Cadnam
Rainfall across the South East, Cadnam included, is lower than in many parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first.
Site managers at schools like Bartley Church of England Junior School can fit frame mastic into the summer works. Older buildings near Cadnam, from historic houses such as Landford Manor (to the north-west of Cadnam) to more modest stock, need compatible products when frames are resealed.
Cadnam is about 3 miles west of Totton, in Hampshire. Anywhere in SO40, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Cadnam is one of 723 places we cover in Hampshire. For work in that direction, see our Southampton page, about 8 miles away.
Postcode districts covered here: SO40 for mastic joints. Among the streets we cover are Old Lyndhurst Road, White Hart Lane and Southampton Road. Just outside Cadnam, we also work in Wittensford (1 mile west), Bartley (1 mile south-east), Copythorne (1 mile north-east), Newbridge (1 mile north) and Winsor (1 mile east). Nearby towns on our patch include Winchester (15 miles north-east), Eastleigh (11 miles east), Totton (3 miles east), Chandler's Ford (9 miles north-east), Hedge End (12 miles east) and Lymington (11 miles south).
Local landmarks in Cadnam
Locally, jobs take us to sites close to The White Hart pub and the streets around them. For rail, the closest station is Ashurst New Forest station, about 3.1 miles south-east. Other landmarks nearby include Tatchbury Mount Hospital (2.2 miles east) and National Dairy Museum (3.6 miles south-east). Not far away are Copythorne Common.
How a job runs
We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. If others near Cadnam need work, visits can be combined, which keeps travel down. You’ll have a fixed quote before work starts.
- We inspect the joints, building by building, and record what has failed and why.
- We send a fixed quote that sets out the joints, the products and the programme.
- The programme is fixed with you, including dates you can pass on to residents or tenants.
- We remove the old mastic completely and clean the joint faces back.
- Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
- Finished joints are looked over and the 12-month guarantee confirmed.
What we need from you
- Send asbestos survey details if the building is pre-2000
- Send your site hours and access windows
- Have the specification and drawings to hand
Request a quote
For a fixed quote, call 01277 525 020 or use the quote form. You can also send details through our quote form.
Read more
How the quote is worked out
Quotes vary with the job. Expect it to depend on:
- Quantities, in metres or numbers
- Joint width, depth and condition
- Site requirements such as inductions and permits
- Whether old sealant has to be cut out first
Pricing mastic joints depends on quantities, condition and access, plus any specification you are working to. Ask us for a fixed quote.
Details that help us quote
The more we know, the firmer the quote. Helpful details to send:
- Any dates the work must fit around
- Specification clauses that apply
- Clear photos of the problem areas
- Whether the building will be occupied during the work
Pricing a project or setting a maintenance budget? We’ll quote against your scope and drawings you can plan around. For a chat about it beforehand, call 01277 525 020 or send details through our quote form.
When something else is needed
We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:
- Roof leaks, gutters or failed flashings that aren’t sealant joints
- Asbestos-containing sealant, which we don’t remove
- Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
If you’re not sure, just phone 01277 525 020 or email drawings and photos and we will give you a straight answer before you book.
Where we work in Cadnam
- Communal kitchens and washrooms
- Balcony and threshold joints
- Window and door perimeters on blocks
- External wall and movement joints
- Shopfronts below residential blocks
- Communal entrances and stairwells
What we’re called out for in Cadnam
Sunlight and weather break mastic down over time. It stiffens, stops stretching and cracks, especially on south and west faces.
Things that typically lead to an enquiry:
- Damp patches beside frames
- Old repairs sealed over failed mastic
- Cracked, hardened mastic round windows on a block
- Draught complaints from residents or tenants
For owners of several units at places like Mortimer Trading Estate, 2.4 miles north-east of Cadnam, one programme can deal with frame and external mastic across the lot.
What to look for in a quote
- Will CSCS-carded applicators be on site?
- Their approach to joint depth and backing
- Their plan for phasing and protecting the area
- Health and safety accreditation such as CHAS