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sizing

Sizing or size is a substance that is applied to, or incorporated into, other materials—especially papers and textiles—to act as a protective filler or glaze. Sizing is used in papermaking and textile manufacturing to change the absorption and wear characteristics of those materials.
Sizing is used for oil-based surface preparation for gilding (sometimes called mordant in this context). It is used by painters and artists to prepare paper and textile surfaces for some art techniques. Sizing is used in photography to increase the sharpness of a print, to change the glossiness of a print, or for other purposes depending on the type of paper and printing technique.
Fibers used in composite materials are treated with various sizing agents to promote adhesion with the matrix material.

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Recent contents Top users
  1. C

    Radiator sizing woes. My screwup for not checking beforehand.

    Having now finished all the wiring, plastering, laying the floor and spending 6 solid weeks and many thousands of £££’s completely gutting and re-fitting the kitchen , I find I’m unable to get a like for like (in dimensions) replacement radiator. Initially we wanted a black double panel rad. No...
  2. M

    Heat loss calcs app?? Boiler sizing?

    Hi guys. Do many of you use a program to size boilers/rads or do you even bother with heat loss calculations? It’s a bit of a long winded process doing it long hand especially when a customer wants a quick quote. I’m not a fan of just replacing like for like if I’m honest.
  3. M

    Pipe sizing for LPG boilers

    Gas safe registered but not for LPG. Have been asked to quote for a number of LPG boilers so if I get the job will do my LPG ticket. But was wondering if pipe sizing is different for LPG than natural gas.
  4. R

    New Boiler sizing app

    Ive got a new replacement boiler to install and the Energy Saving Trust whole house boiler sizing is no longer being allowed to be used to correctly size new boilers. Apparently there is an app you can use for room by room calculation anyone with a link. I've looked online and keep just...
  5. H

    Sizing a cylinder for 9 bathrooms

    Sizing an indirect H/W cylinder. What size of H/W cylinder would I need for a property with 9 bathrooms?
  6. johnnybaloney

    Toilet flush valve seals - unusual sizing

    Hello, Recently I received an unusually large water bill which led me to the discovery of leaking flush valves. I have two toilets and it turned out in both the valve seals were bubbling so I set out to replace them. For now I just flipped them over as the other side was smooth on both. The...
  7. G

    Sizing Heat Sink radiator for wet hetas install

    Hi - I've had some conflicting advice so looking for confirmation please - what size should a heat sink radiator for a log burner/boiler be? I've been told by one installer 10% of output to water and another 20%. I can;t find aything in building regs and can;t find a HETAS document with that...
  8. K

    Favorite rad sizing tool?

    Does anyone have a favorite rad sizing app or site? I've used a few but they seen to vary and many are quite clunky. Any out there with decent accuracy, a whole house report would be amazing too...
  9. F

    Pipe sizing - Replacing a one pipe system with flow and return

    Hi, I'm a first time poster with a skill set akin to that of a competent DIY'er I guess. I'm planning on replacing a old in efficient one pipe system with a flow and return. This will be done on our recently purchased bungalow which has an oil fired boiler. Whilst I'm confident a 22mm flow and...
  10. J

    Boiler sizing question

    The bigger the output of boiler Does say an 25 kw boiler have a bigger heat exchanger or more surface area in combustion chamber than say an 18?? What exactly makes a boiler haveva higher output??
  11. T

    Kitchen knock through losing one rad. Btu for new single?

    Hi all. I'm knocking through my kitchen and dining room and will lose them rad that is currently un domingo room due to repositioning kitchen. New rooms size will be L 7.2m W 3.2m H 2.35m New French doors going in to replace dining window (2100 x 1750mm) and bigger kitchen window of 1.95 x...
  12. M

    Sizing expansion vessels

    Has anyone got a good rule of thumb for sizing an expansion vessel for a central heating system. A combi has a 8 litre vessel. And will deal with the expansion of say 8-10 rads. Could one use this as a ball park figure and multiply up from there Obviously pipe work to take in to account 22mm...
    • Matt0029
    • Thread
    • america expansion sizing usa
    • Replies: 23
    • Forum: USA
  13. M

    Effect of pipe sizing in heating system

    Current system Danesmoor utility installed in outbuilding. Flow/return connections on the boiler are each 1.5" BSP then straight into 32mm copper for a run underground of approx. 20m to the house. Main pump at boiler is UPS 25-55. Proposal is to replace old boiler with Hounsfield Tuscan 26/30...
    • Max
    • Thread
    • boiler boilers central heating system flow flow and return heating system pipe pump sizing system
    • Replies: 0
    • Forum: Central Heating Forum
  14. Geogreek

    Water pipe sizing question for hydronic coil

    Hello I need help with what pipe size I need to run for a hydronic hot water coil. Coil specs: 72k mbh 4 gpm 1.5 pressure drop 180 entering temp 142 leaving temp 3/4" coil connection 1650 cfm 620 fpm Piping is roughly 25 feet from circulator. Pump is a UPS-15-58FC 3 speed circulator. I am...
    • Geogreek
    • Thread
    • america hydronic pipe question sizing usa water
    • Replies: 1
    • Forum: USA
  15. M

    System boiler kw sizing and expansion vessel

    Hi, After a bit of a saga with my plumber, I need to chose boiler size as soon as possible, the plumber is not going to do any heat loss calculations or do anything to work out accurately so I am on my own. Appreciate this is not what should be doing but after some level of finger in the air...
  16. S

    Boiler Sizing - Large 3 Bed House

    Hi All, Hoping to get some sound advice regarding combi boiler sizing for a large 3 Bed House. We are refurbishing the house and plan to strip out the old boiler and pipework from the loft to relocate to the kitchen / diner whilst also renewing all copper pipework and installing new radiators...
    • Sjrogers1
    • Thread
    • america boiler house large sizing usa
    • Replies: 6
    • Forum: USA
  17. B

    Advise Please - Tap 20 tooth tap gland packs? Sizing ??

    Hi All I need to replace a leaking tap (separate, not a monobloc). I notice screw fix do 3 sizes, 8mm, 9mm and 10.5mm, is this just the diameter of the spline if i measured with vernier calipers? To me the description seems wrong, 8, 9, 10.5mm would only refer the the actual HEIGHT of the...
    • bilabonic
    • Thread
    • advise america gland please sizing tap tap gland tap glands usa
    • Replies: 12
    • Forum: USA
  18. P

    Boiler Sizing

    Hi All, I'm trying to work out a boiler size for a huge, four storey victorian property, part of which is already heated. I'll be adding a second boiler, 18 rads and a cylinder. Is there a heat loss calculator online somewhere or can I relate the boiler size to the total kw output of all the...
  19. C

    Pump Sizing

    Hey guys long time since I have posted here but know some of you know your salt. I've got a job in a townhouse and currently the boiler sits on the second floor of a three story but I'm moving it to the ground floor as per client request, problem is, its got ridiculously high ceilings, I'm going...
    • Chester
    • Thread
    • america pump sizing usa
    • Replies: 53
    • Forum: USA
  20. J

    Heat loss/ rad sizing

    I've had two suppliers tell me they'll size the rads in a new build, the only info they want is the size of each room. They said they don't need to know about windows, Insulation, what's above it or below as it's a new build. I've heard that it's ok to oversize rads so that you can get a lower...
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