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Haddonstone (Semi-dry cast limestone) Haddonstone replicates the texture, feel and strength of Portland and Bath stone. It weathers beautifully to become virtually indistinguishable from its quarried stone equivalent, making it ideal for decorative ornamental and architectural designs. The principal materials for semi-dry cast Haddonstone are limestone, white cement, sand and a very small quantity of water. The mix has the feel of damp sand or earth. The stone is packed into the mould using a number of ingeniously crafted tools. This is done by hand or by using pneumatic hand rammers. No finishing is required due to the quality of mould manufacture and casting technique. Haddonstone originally relied on the vagaries of the English climate to ensure that the stone cured correctly. However, the effects of temperature, precipitation and wind made this a very inexact science. For this reason, the company introduced a vapour curing system in 1999 that gives the stone the equivalent of fourteen days strength overnight. Not only does this give the company a guaranteed curing system, it also reduces delivery lead times and handling issues. Standard Haddonstone colours are Portland 01, Bath 02 and Terracotta 04.

TecLite (fibre-reinforced cast limestone) Although TecLite closely resembles traditional cast stone and natural stone in appearance, the use of thin wall construction and GRC/GFRC technology means the component weight is reduced by approximately two thirds when compared with similar Haddonstone and TecStone pieces. TecLite is a cement based material containing alkali-resistant glass fibre which benefits from a high strength to weight ratio. Architectural products made by the TecLite process are ideal for retro-fit, timber-frame and new build projects. TecLite products can be used in conjunction with Haddonstone architectural components as the colours are complementary. Consequently, users can incorporate both Haddonstone and TecLite components in the same project with absolute confidence. TecLite products can be used to achieve the same crisp detailing normally only associated with Haddonstone designs. Where a Haddonstone design is supplied in TecLite as standard, the product code is prefixed by the letters TL (eg TLHA540). Standard TecLite colours are Portland 01, Bath 02, Terracotta 04, Coade 05 and Slate 06.

TecStone (wet-cast limestone) In both the UK and USA, Haddonstone also manufactures products by a wet-cast process, called TecStone. Here, the mix is poured into the mould. This process gives a finish, once acid etched, much more akin to Coade stone and is ideal for larger architectural products, flooring, fireplaces, complex statuary and contemporary designs where clients prefer a surface finish which does not weather quickly. TecStone is a high specification stone designed to meet demanding design and performance criteria for commercial projects and large or small scale individual private developments. Hand finishing is required to ensure a quality product. Where a Haddonstone design is supplied in TecStone as standard, the product code is prefixed by the letters G or H (eg HE600). Standard TecStone colours are Portland 01, Bath 02, Terracotta 04, Coade 05 and Slate 06.