What are Helifix ties?
ResiTie is a remedial wall tie used where a resin bonding is required at both tie ends. The tie is manufactured from from austenitic stainless steel Grade 304 (1.4301) or 316 (1.4401).
What is the proper spacing for brick ties?
Ties should be spaced every 16″ vertically and every 16″ or 24″ horizontally depending on stud spacing. This supports most codes which require one wall tie for every 2.67 SF of wall area. Ties must be nailed into studs and are typically installed as the mason works up the wall with brickwork.
How often do you put brick ties?
You need two and a half wall ties per square metre of masonry. The maximum horizontal spacing is 900mm and the maximum vertical spacing is 450mm. That’s why cavity wall insulation boards usually have a maximum dimension on the short edge of 450mm.
How long do wall ties last?
In houses built before the 1980s, you can expect the wall ties to last around 15 to 20 years. For properties built since the 1980s, wall ties are generally made of stainless steel and can last over 50 years.
How do you replace corroded wall ties?
Installation of remedial wall ties, followed by the removal or isolation of the existing wall ties, is the quickest and most cost effective solution to wall tie replacement. There are various remedial wall ties available, but the three most common are: Mechanical Expansion. Resin / Grouted.
What are wall ties made of?
These days, wall ties are predominantly manufactured from stainless steel which is now readily available commercially and withstands corrosion from water and cement without requiring additional protection.
Can you retrofit wall ties?
Retrofit masonry ties are used where a building is suffering from cavity tie failure. Installation of stainless steel wall ties provides an interlocking mechanical connection to tie bricks and stabilise the wall.
What is the purpose of wall ties?
Wall ties, sometimes called ‘brick ties’, are used in buildings with cavity walls. They are used to join the two leaves of a cavity wall together, allowing the two parts to act as a homogeneous unit. Hidden from view after construction, wall ties play a vital role in ensuring the stability of a building.
How do you calculate brick ties?
Most codes specify one tie per 2.67 square feet of wall area, which can be met by nailing ties to each stud and spacing them every 16 inches up the wall. The numbers work with 16- or 24-inch stud spacing.
How long do brick ties last?
How long do they last? Prior to 1978, wall ties were usually manufactured from galvanised mild steel. These ties were expected to last the lifetime of the building, but it has since been recognised that these wall ties can corrode after only 15-20 years.
What kind of ties do they use at Helifix?
At Helifix we are continually developing new products to accommodate modern methods of construction. Ties for timber frame construction, securing masonry directly to inner leaf blocks or panels, extending or securing new walls to existing walls and fixing timber or MDF to masonry.
How do you drill pilot hole for Helifix dryfix?
It is simply power-driven into position, via a small pilot hole, using a special installation tool that leaves the end of the helical tie recessed below the outer face to allow an ‘invisible’ finish. 1. Drill small pilot hole using rotary percussion drill, 3-jaw-chuck type.
When did Helifix start making stainless steel fastenings?
Having created the original one-piece stainless steel helical fastening nearly 30 years ago, Helifix became a market leader in the design and manufacture, at its own UK factory, of specialist construction wall ties, structural fastenings and masonry repair systems.
Can a Helifix gun be used on masonry?
In addition, a selection of hand operated and pneumatic applicator guns is also available. Masonry may deteriorate, crack, delaminate and fail for a variety of reasons. Most of these problems can be overcome by using various combinations of Helifix remedial ties and masonry reinforcement products.