Dutch light This refers to the size of the “light” (28.75 x 56 inch) 730 mm x 1422 mm. For more than a decade, arsenic- and chromium-free ACQ Preserve® treated wood has been used in some of the world's most environmentally sensitive locations. From the pristine environments of national parks in Australia, North America, Europe and Japan. Preserve treated wood has been used around the globe to provide a durable building product for outdoor projects where environmental values and product safety are priorities. Environmentally Advanced Preserve® treated wood products are available in response to concerns raised by public and government sectors of the treated wood market regarding the use of arsenic and chromium in pressure-treated wood. Preserve is treated with ACQ®, an environmentally advanced formulation that is arsenic and chromium free. The ACQ preservative system provides long-term protection from rot, decay and termites without the use of any EPA listed hazardous chemicals. The ACQ preservative in Preserve treated wood is a copper plus quat system that provides the same level of protection to wood as CCA (Tanalised) preservatives against decay, rot and termite attack (without the use of arsenic and chromium). The main active ingredient in ACQ is Copper, which has long been established as the most cost-effective preservative component used in timber preservation. Quat acts as the co-biocide in the ACQ preservative, providing additional protection from fungi and insect attack that copper alone would not control. Quats are commonly used in household and industrial disinfectants and cleaners and are biodegradable in soil. Copper and quat solutions similar to ACQ are used for the control of fungi and bacteria in swimming pools etc. Painting and Staining or Natural Weathering ACQ Preserve and Preserve Plus can be painted or stained to match any outdoor colour scheme. High quality oil and latex based paints and stains are recommended. Water repellent coatings can be applied to enhance the long-term weathering performance. It is important that the wood is dry and free from surface deposits prior to applying any coating. Left uncoated ,or with clear water repellent coatings, Preserve and Preserve Plus will initially weather to a natural brown colour, eventually turning grey following long-term exposure to the sun. Other sizes are available at 36”, 48” and 56”. Doors that are 36” wide can be fitted on glasshouses 12 ft wide and over. Doors that are 48” and above can be fitted to the 18 ft, 20 ft and 29 ft models.
On a glasshouse up to 12 ft wide the vents are operated by casement stays. On a glasshouse over 12 ft wide the standard method of operation is by steel props. Another option for these glasshouses is to fit cable-controlled vent openers. These are operated by levers on each side of the door. One lever operates the vents on one side of the ridge. Heavy duty Solar powered automatic openers can also be supplied on any vent. |