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HDU Signs

High Density Urethanecambryar HDU sandblasted entrance sign 320x240

HDU (High Density Urethane) This material was originally created to be used in the aerospace industry. It can be found in almost every automobile that is built today, it fills the wings of airplanes and can be found between the 9" thick steel plates that make up the hulls of nuclear submarines. It is a very versatile material. It is resistant to most chemicals and solvents; any type of paint can be used on it.

chickahominy 2 320x240

 chickahominy falls is a 4" thick HDU sign created with a combination of hand carving,. routing. sandblasting and appliqued routed letters. Our client wanted it to have the look of a slab of rough hewn sandstone with perfectly smooth shaped letters rising out of it. To see how this was created follow this link chickahominy blog 

HDU is a very "Green" material 

HDU. is both artist- and environmentally friendly. Not only does it save trees as an optimal wood replacement, it is sustainably produced, with a minimum 16 percent green content. In fact, every sheet contains 240 recycled plastic water bottles. So, this material is better for your work, better for the earth, and better for your health. What's more, this eco-friendly solution can contribute LEED certification points for building credits. HDU. is nontoxic, U.S. made, VOC and CFC free.

square pond2 community entrance signs 3d hdu 23kt gold leaf classic signs nc1280x1024

If HDU is sandblasted it has the look of a stone texture which is great for detail signs but if we sandblast it through a frame of piano wire we can create what looks just like the wood grain you get from a sandblasted all heart vertical grain redwood sign. Click on the photo above and you will see the two textures used together on the Square Pond sign

saddlebrook 3in deep sandblasted HDU sign with woodgrain effect 1 by signblasters com576x768





This HDU sign was epoxied together to a thickness of 3" and has the faux wood grain effect










HDU is a very "Green" material (cont)


It is impermeable by water and moisture, and unaffected by high-salt environments. And, the material is formulated to withstand temperatures from
−30° F to 220°F. So it holds up under extreme conditions and in severe weather. HDU. clearly outperforms wood.

village chapel sandblasted hdu traditional custom sign monument from classic signs nc 220x180ishVillage Chapel in Pinehurst NC is a colonial pediment style monument sign manufactured completely from HDU. The bottom panel with the service times is removable.woodlake 23kt goldleaf appliqued letters sign classic signs nc 300x170

 




Positives

      • This material has zero moisture content, so unlike wood when it heats up in the sun there is no moisture to expand and cause blisters that will crack in cold weather and start the breakdown process of the paint or whatever coating is applied.
      • It has a very low "expansion/contraction factor". This means that it doesn't expand in the heat causing the paint to crack; allowing more water (or humidity; same thing) to start the downward spiral of destruction.
      • It will not warp (without any outside influences), crack or check.
      • There is no color or stain to bleed through the paint causing discoloration.
      • It is very easy to cut, rout, carve, sandblast and shape.
      • As long as it is kept painted, it will last indefinitely.

 Calvert City sign

This city entrance sign is sandblasted HDU and is 12 feet wide, which means that the total width of the monument is over 40 feet. What is unusual about this is that the cap stones all the way across are also made from HDU. It was built in our workshop and taken out in our trailer in 6 pieces where we supervised the installation by our clients own employees.calvert city 24capstone installation finished 2 classic signs nc 220x180ish

calvert city 23 capstone installation finished 1 classic signs nc 220x180ish


Negatives

      • It is somewhat expensive if you buy the quality HDU sheets. But you get what you pay for and it is less expensive than Cedar and a lot less than Redwood.
      • It can be damaged by Ultra violet rays from the sun. [That is true, however I have left samples of several different manufacturers HDU blocks out in the sun for almost 10 years.all are showing signs of deterioration, pitting and rounding on the corners. But it would take several decades to destroy the blocks. Remember HDU signs are painted so if a corner was chipped off it would take a very, very long time for it to completely degrade.

 Bethesda Church sign is a 12' x12' x3" thick HDU sign , It was built from two halves and has a 2" x 0.25" thick steel skeletonrunning horizontally and vertically all welded together and epoxied into routed pockets in the center of the sign so that when it was epoxied together it isn't seen except at the sides where it is used to mount the sign.This means any stresses are on the steel and not on the sign itself.

bethesda church hdu steel skeleton appliqued routed letters 220x180ish

Things to be aware of.

What is noticeable is that the cheaper HDU samples are much more likely to crack under pressure or stress. Many sign manufacturers tell their customers there is no difference between one sheet of HDU and another sheet by a different manufacturer. That is NOT TRUE. Many of the cheaper sheets are brittle and can be easily damaged. Which is why our suppliers have certain brands marked on our account details, that they are never ever to substitute them for our preferred brands if they are out of stock.

 parkers market hdu sandblasted carved goldleaf classic signs nc 300x169

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Gallery

bottom collage Lauren 1a 364x168

Some of what we create on a regular basis

Signs we manufacture are used for but limited to: Business signs, shops signs, restaurant signs, condominium Signs, subdivision signs, golf course signs, street signs, housings development signs, salon signs, beauty parlor signs, real estate signs, commercial signs, industrial signs, house signs, farm signs, beach house signs, resort signs, traffic signs, hotel & inn signs, pub signs, vehicle signs, interior & ada signs, boat signs, truck signs, office signs professional signs, trail signs wall sign, entrance signs, lobby signs, street name signs, outdoor signs, custom signs, mall signs, retail signs , marina signs, architectural signs.

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