Balcony Repair in Padstow by a Trusted Builder Near Wadebridge
- Aaron Cook
- May 10
- 6 min read
Updated: May 16
We recently completed a complex decking repair in Padstow, Cornwall, where an existing raised timber balcony and stair structure had suffered from extensive rot, loose fixings and hidden structural issues.
As an experienced building company in Cornwall, we are often asked to repair decking, balconies, timber structures and external joinery that have deteriorated over time due to weather exposure. It required structural timber repairs, new Douglas fir posts and beams, reinforced concrete padstones, stainless steel fixings, joist hangers, diagonal bracing and careful joinery work.
For anyone looking for a builder in Wadebridge, Padstow or the surrounding areas of Cornwall, this project is a good example of how important it is to properly assess the whole structure and what it's actually suporting, not just the visible surface.
Rotten Decking Posts and Wobbly Stairs
The original timber posts were rotten towards their bases, and the stairs were unstable with noticeable movement from left to right. The posts supporting the stair section had also decayed at ground level, meaning the stairs were no longer properly supported.
A number of the original iron nails had worked loose over time, particularly around the handrails. This had caused movement in the handrail sections and reduced the overall strength and safety of the balcony.
One section of the balcony had completely rotten spindles. The lower sole plate supporting the spindles had become soft and mushy, while the upper handrail plates were also soft at the connection points. The corner handrail plates had deteriorated where the timbers met, so these areas needed strengthening and refixing with modern stainless steel brackets and structural screws.
Hidden Problems Beneath the Balcony
Once we opened up the structure, we found that the three main front posts were not properly supporting the main load-bearing joist of the balcony.
Instead of the balcony joists bearing directly onto the front support posts, the load was effectively being carried by a 25mm batten fixed with iron nails to an inner joist. That inner joist was then fixed to a load-bearing joist, which sat in rebates formed into the original posts.
This was a major structural issue. The balcony looked as though it was supported by the front posts, but the actual load path was weak and indirect.
The original posts also continued up past the level of the balcony joists and formed part of the decorative handrail detail at the corners and middle of the balcony. This meant the replacement work had to retain the appearance of the balcony while improving the strength of the structure.
Temporary Propping and Careful Removal
Before removing any rotten or weakened timber, the balcony was taken out of use for the duration of the works. We installed acrow props and used scaffold boards to spread the load safely while repairs were carried out.
Removing the old timber required careful work. Much of the original structure had been fixed with iron nails. We used oscillating multi-tools, timber wedges and controlled force to remove the damaged sections while protecting the parts of the balcony that could be retained.
Grinders and metal cutting discs were used to trim rods, bolts and joist hangers where needed. The project also required ladders, hop-ups, auger bits, HSS drill bits and a range of specialist fixings.
New Structural Douglas Fir Posts and Beams
We arranged several deliveries to site, including two large timber deliveries. The first included 5m Douglas fir posts, which were cut, prepared and mortised to replicate the original structure of the balcony.
We used structural Douglas fir C24 posts and beams to improve the strength and longevity of the repaired balcony. These were not simply face-fixed into place. We formed proper mortise-style joints between the posts and beams, creating a much stronger connection.
On the posts, we left approximately 60mm of timber in place and removed around three quarters of the section. On the beams, we removed approximately 60mm while leaving the remaining section intact. This allowed the post and beam to interlock, forming a more secure and structurally reliable joint.
Because the posts ranged between approximately 155mm and 175mm, each connection had to be measured, cut and adapted on site.
Improving the Balcony Load Path
To correct the original structural weakness, we introduced diagonal bracing to the three replacement front posts. This allowed the actual load-bearing joists to be properly supported.
We also added two additional front posts to directly support the inner joist that all of the main decking joists were connected to. These new posts were bolted through both the load-bearing joist and the inner joist, creating a much more direct and reliable load path.
New metal joist hangers were installed, replacing the reliance on the original 25mm batten. We then bolted the inner joist to the main load-bearing joist at staggered centres of approximately 400mm along the full length. This tied the structure together and created a far stronger connection between the balcony joists and supporting beam.
At the rear of the decking, we introduced a new load-bearing beam because the original wall plate fixed to the masonry of the house was rotten in places. This gave the rear of the balcony additional support and reduced reliance on weakened existing timber.
Groundworks, Padstones and Reinforced Concrete
The groundworks were a major part of this decking repair in Padstow. We had to dig down approximately 600mm below ground floor level for the new and existing padstone positions.
A large Hilti concrete breaker was hired to break out the existing hard material and prepare the holes properly. Once cleared, reinforced metal grids were installed, while taking care to avoid the network of waste pipes and drainage below.
The concrete work required around one tonne of ballast, 800kg of all-in ballast, several bags of sharp sand, cement and the use of a cement mixer on site.
These reinforced concrete padstones provided solid foundations for the new structural posts and helped ensure the repaired balcony had long-term strength and stability.
Stainless Steel and Galvanised Post Shoes
For the post bases, we used a combination of stainless steel and galvanised post shoes. Where possible, we selected post shoes with drainage holes at the base, allowing moisture and water to escape rather than sit against the timber.
The post shoes were fixed using stainless steel rods, washers and nuts. Because the posts and shoes varied in size, the rods were cut to size on site.
We also used chemical resin fixings to secure the rods into the concrete bases. Many of the pre-drilled holes in the post shoes were suitable for M10 fixings, but we were using M12 rods. This meant the holes had to be carefully enlarged.
We started with a 4mm HSS drill bit, increased to 8mm, and then opened the holes to approximately 14mm so the 13mm masonry bit and rods could pass through accurately.
Where galvanised post shoes were slightly larger than the 175mm posts, we used plastic packers and structural screws to prevent movement. Where 155mm posts needed to fit into slightly smaller shoes, the timber was rebated carefully to suit.
Handrail, Spindle and Joinery Repairs
The handrail sections required significant strengthening. Rotten spindles were removed, soft sole plates were repaired or replaced, and weak handrail junctions were reinforced.
We used battens to strengthen weak points at the joints, brace the base of the spindles and support the middle sections of the handrail. Stainless steel brackets were installed at the intersections between the posts and handrail to make sure the handrail was properly secured.
This was especially important because many of the original iron nail fixings had loosened over time, leaving the handrail vulnerable to movement.
Joist Repairs, Noggins and Metal Straps
The side load-bearing joist of the balcony was too rotten to reuse and was replaced. We also removed and replaced areas of fascia, end joists and other damaged joist material.
A second timber delivery supplied additional joist material, scaffold boards, top plate timber, replacement end joists and timber for a row of noggins through the middle of the decking structure.
New metal straps were used to connect the new beams to the joists above, helping tie the structure together and improve overall stability.
Reinstating the Paving
Once the structural timber repairs and concrete works were complete, we laid a new row of paving slabs to match the existing paved area.
This helped reinstate the ground level neatly around the new post bases and gave the finished project a clean, professional appearance.
Professional Balcony Repairs in Padstow, Wadebridge and Cornwall
This was a highly detailed decking repair in Padstow, involving structural joinery, groundworks, reinforced concrete, stainless steel fixings, galvanised post shoes, Douglas fir C24 beams, new joist hangers, diagonal bracing and paving repairs.
It was not just a cosmetic decking repair. The balcony had hidden structural weaknesses, rotten posts, unstable stairs, decayed handrail sections and an inadequate load path through the original front support structure.
By carefully redesigning the support system and replacing the failed timber with properly fixed structural materials, we were able to retain the character of the original balcony while significantly improving its strength, safety and durability.
If you are looking for a builder in Wadebridge, a building company in Cornwall, or need decking repairs in Padstow, we can help with structural timber repairs, balcony repairs, exterior joinery, groundworks and general building work across the local area.
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