DECORATIVE RIDGES AND FINIALS

In addition to the standard fittings for completing the roof, Eternit produce a wide range of decorative ridges and finials. A selection of these is shown below, but Eternit have the experience and expertise to produce any fitting of almost any shape to suit customer requirements.

For standard fittings, please refer to the Eternit 'Technical Guide'.

Extension piece	Fleur-de-lys finial	Angle scroll finial
Falcon finial	Dragon finial	Black ridge

Two hole crested ridge	Club crested ridge	Slotted roll top ridge with fleur-de-lys inserts
Slotted roll top ridge with cocks comb inserts	cocks comb crested ridge	Roll top ridge
Capped half round ridge	Capped angle ridge	Slotted roll top ridge with spade inserts

VENTILATION SYSTEMS

In response to the new Building Regulations and the need to ensure that the aesthetic qualities of the roofscape are maintained, Eternit roofspace ventilation systems provide appropriate options for the ventilation of even the most complex roof types. These systems comply with strict ventilation regulations and ensure adequately ventilated and healthy roofspace.

For full details on the application of these systems, please refer to the Eternit 'Technical Guide'.

Half round ridge	Plain angle ridge	Decorative ridge	Gas ventilating ridge

Clay tile vent	Eaves ventilation packs (10 or 25 mm)	Dry ventilated ridge system
Ridge pipe adaptor	Flexible pipe	Tile vent adaptor

SERVICES

The Eternit range of products is matched by the quality of service provided. A specialist technical service is always available to answer any questions relating to the Eternit ranges of machine-made and handcrafted roof tiles.

This includes a free estimation service to provide tile quantities and help customers with roof detailing.

TECHNICAL GUIDE

For comprehensive technical details, performance and specification of Eternit clay roofing tiles, see the Eternit 'Technical Guide'.

GUARANTEE

Eternit Building Materials guarantee the durability of their clay plain roof tiles for 100 years and their ventilation products for 10 years, provided they are installed in accordance with BS 5534: Part 1: 1997.

DRYCO SYSTEMS

DRY CONSTRUCTION PRODUCTS

InduCo M

Description

The DryCo systems InduCo M board is a low cost fibre cement sheet that is non-compressed and naturally cured. The sheet has one fair face which is semi-smooth the reverse face has a dimpled finish. The sheet is natural cement grey in colour has a porosity of 29% and a density of 1400 kg/m³.

Uses

InduCo M is ideal in its 4mm thickness for use as undercloaking. It is also ideal as a lining sheet for agricultural buildings where a high-density sheet is not required.
The sheets are suitable for nailing, stapling or screwing to timber or metal supports using appropriate fixings.

Dimensions
Thickness	4, 6, mm
Width	1200 mm
Length	2440 mm
Weight	6kg/m² @ 4 mm

Strips available in 4 mm thick
149 mm wide @ 1220 & 2440 mm long for undercloaking

Support Structure

The sheets can be nailed, stapled or screwed to supports at 600 mm c/c. The fixings should be 13 mm or greater from the edge at 200 mm c/c along the edge batten. On the intermediate batten fixings can be at 300 mm c/c. Fixings need to be no closer than 50 mm to the corners.

Installation

The boards can be fixed with the long edge either horizontal or vertical. Each board can be butted up to its neighbour but must not be flexed to position giving a tight fix as this will cause bowing of the boards as the building moves an as air moisture content changes.

Fixings

Screws fixing can be achieved with the Torque pan head screws (40 x 4.2 mm) at the above described spacings.

Nailing can be achieved using a 40 x 2.8 mm long stainless steel clout nail with a 6.5 mm head at the above described spacings.

Stapling the boards would be at the above described spacings using a staple of 12 mm wide minimum, which gives adequate penetration into the structure. Length of the staple to be advised by the staple manufacturer.

High wind loadings or exceptional impact requirements

The application of these boards is for lining purposes and internal use only therefore will not be exposed to wind loads.

If high impact is expected then the introduction of additional support members to increase the panels resistance, if loading is due to animals or storage of product then higher strength boards are advised such as InduCo HD 10mm board.

Surface mounted features

Where other building features, i.e. signs, canopies, lighting etc. are to be fixed then additional batten work should be included and clearance holes provided through the boards under no circumstances should the boards receive additional structural load.

Ventilation

The boards do not need any ventilation themselves as they are for internal use only.

Properties (air dry)
Density	1400kg/m³
Bending Strength - to fibres:	21N/mm²
Bending Strength ¦ to fibres:	12N/mm²
Modulus of elasticity:	5000N/mm²
Fire behaviour	class 1
Porosity:	29%
Hygric Expansion: (oven dry to fully saturated)	=4 mm/m

Storage

InduCo M boards should be stored flat on pallets in dry conditions, under cover and protected from the weather. If moisture is allowed to penetrate between the stored sheets, permanent staining will occur. The pallets should fully support the boards.

Handling

InduCo M boards tend to be more flexible than their timber equivalent and in certain circumstances difficult for one person to control. It is suggested to carry the boards on edge with two people.

Cutting

InduCo M can be cut very easily with a hard metal toothed handsaw or a circular saw with a tungsten carbide blade. It is also possible to score the surface and break the board over a sharp straight edge; this does not give a clean cut through the thickness and is therefore not the advised method of cutting for visible joints.

Finishing

InduCo M is not a board intended to be decorated but if a decorative colour finish is required to be added then the product must be suitable for covering a cement product.
These boards cannot be rendered over.