Glass — How to Buy It
A homeowner can get a lot for his money or a little when he buys glass for windows, doors or dividers. But if he knows which glass will do what, and how to buy it, he won’t pay randburg glass double or triple prices for plate glass when he could have used heavy bed sheet glass, nor will he waste money by ordering glass by the bed sheet when he could have used a case.
Window glass, also called bed sheet glass, is the most commonly used in the house. In fact before glass walls and picture windows were used it was usually the only kind. It comes in two thicknesses, single strength and double strength; and in two qualities, A and B.
Grades A and B differ only in the number of small blemishes and waves. However, the difference is not in most cases noticeable, and many dealers don’t even stock A quality because they can’t believe that it is worth a 30 % premium.
Whether to use single or double strength depends mainly on window size. A good rule to follow is to try using double strength for anything over about two feet rectangle. What size can double strength glass be? If years don’t exceed 60 to 70 l. p. they would., double strength glass may be used in sizes up to 38″x48″, or 34″x72″.
The next price jump to ravenscroft bed sheet or plate glass is very sharp. If you want a window wall consider the possibilities of working it out using the indicated dimensions of double strength instead of plate glass. This can be most attractive and at about one-fourth the cost. Go right across the room with 30″x72″ double-strength glass placed vertically. The distance of approximately 30″ to the floor can be plain wall or used for built-in bookcases, cabinets or ventilating louvers.
Buying window glass by the case is one way to save money. Glass by the case doesn’t cost much more than half as much as by the bed sheet. It’s also quicker to handle. At economical prices you can afford to use glass liberally in whatever you decide and build or remodel or enclose. And, buying by the case does not mean you’re stockpiling it for years to come. Usually a case of window glass is whatever number of sheets comes nearest to totaling 50 rectangle feet. Cases of very big sheets contain 100 rectangle feet.
Ravenscroft bed sheet, which is heavy window glass of good quality, is the economical thing to buy when the opening is too big for double strength.
Plate glass, which is polished to optical care, may be 1/8″ thick or for a big view window, 1/4″ thick. If you have a long-distance view through your window, you will need plate glass. Otherwise you can use ravenscroft bed sheet; for short kilometers you will not notice the slight waviness.
For plate and usually ravenscroft bed sheet, in sizes too big for you to handle and too costly for you to risk breaking, you must figure on paying a higher installed price, which includes a high-end labor cost.
Heat-absorbing plate glass, while no substitute for air con, does screen out approximately 29% of the sun’s heat. It is used in to the west windows of seaside homes, as well as in car windows. It costs about 5/2 times as much as regular plate glass.
Obscure glass is used where you want light but no visibility. For example, a wall of it might be just the thing for a attic recreation room where section of the attic is used as a garage or work shop. For this you would need the thick kind, say 3/8″. Thinner figured glass serves for entrance panels, filing cabinet doors and shower enclosures.
Transparent mirror glass is often used for one-way vision in entrance doors. Ready-made it is extremely expensive, but a glass dealer who makes magnifying mirrors can usually prepare it for you at about half the price.
Insulating glass is the modern, superior replacement ordinary windows plus storm sash. Like any warmth, it usually pays for itself over the years in fuel savings as well as comfort. It consists of two or three window panes sealed in units, with air spaces between the window panes. A typical double glazed unit has two sheets of 1/4″ plate glass with a 1/2″ air space between. Originally all insulating units were made of plate glass, but it is now made in window glass as well. If you can’t need large windowpanes, you can save about one- third utilize the window glass kind.
In the long list of building materials, glass blocks rank as one of the most versatile. They can be used for exterior as well as interior walls or for partition walls that do not go entirely to the ceiling.
Glass blocks provide light plus privacy. They come in many sizes and shapes and there are special blocks made to control direct sunlight. Furthermore, glass blocks are easy to maintain and special units are available to provide setting up through glass block walls.
Glass blocks can be installed within a wooden frame or in a bed of mortar. Once you understand how to set class blocks in mortar — a project you might want to undertake to restore footwear attic window with glass blocks — then you will be able to handle glass blocks within a frame inside the house. Literature on interior framing of glass blocks is readily available from glass block manufacturers.
How to work with Glass Block
The proper mortar materials and mix are important whether for laying bricks or glass blocks.
The proper mortar materials are Portland concrete floor, hydrated lime, sand, water, and waterproofing compound. The addition of an integral water-proofer of the water-repellent type is an added measure to insure water tight joints. Manufacturer’s specifications concerning the use of this material should be followed very closely. Where a waterproof masonry mortar is used, no additional water-proofer should be added to the mix. For better results, accelerators and antifreeze compounds should not be used.
The accurate rank of materials is important. Generally a 1-1-4 mortar mix is satisfactory. However, reasonable variations from the mix are permitted and permitted limits are covered by manufacturer’s specifications.
The consistency of the mortar mix has a direct bearing on the strength and weather-proof ness of the joints. Since glass blocks have no suction like bricks, the mortar must be drier… it should not flow or have too much decline. Too wet a mix makes it extremely difficult to get proper alignment of block joints, and cleaning time is greatly increased. The mix should he not too dry, not too wet, but just right. Here is a positive thing to remember: Do not re-temper mortar after the ¡niti. il set has had place.
PANELS OF GLASS BLOCK 35 SQ. LEGS. OR LESS
In this type of construction the ideal area is 35 rectangle feet with maximum width 5′ and height 7′. The normal practice is to try using an expansion space at the side jambs of all glass block panels. However, for small panels as highlighted here the blocks can be mortared in solid at the side jambs. It is necessary, however, to keep a finger space between stone withes about 3/4″ deep. This allows the mortar to enter in at jamb and secure panel.
Glass block panels, regardless of area or size, are nonload bearing and require space at the head to take care of expansion and lintel deflection.
PANELS OF GLASS BLOCK BETWEEN 25 AND 100 SQ. LEGS.
Where it is desirable to show the full face of the block panel, chases cannot be used for lateral support. Proper support can be obtained by using wall anchors if the area is not over 100 rectangle feet and neither panel dimension is over 10′. The wall anchors should be spaced 24″ apart — and occur in the same joint as the wall tie. To allow for free movement of the panel, the anchors are crimped or misshapen in the expansion space. As a space for calking must be provided, a standard expansion strip is easily cut to 3″ width to be inserted between the anchors with gobs of asphalt emulsion. Local code authorities in some areas may restrict the use of wall spine construction.
This tool is used to cut glass to size. Usually, a glass cutter has a small rotary wheel or diamond placed in the handle.
There are also glass cutting bits for drilling holes in glass. These special bits require the use of a lubrication while cutting. It is best to make a ‘well’ or ‘dish’ around the spot to be drilled by using putty to form the walls. Then dump a little turpentine or oil into the ‘dish’ to lubricate the bit while it is cutting through the glass.
While you can usually buy glass cut to size, there are times when it is necessary to cut the glass yourself. When you watch an expert cut glass, it looks easy enough. Well, here’s how to cut glass as an expert.