Bluesil™ Silicones...When Details Matter
RTVs for Moldmaking
Call : 1-866-474-6342
Email : moldmaking@bluestarsilicones.com

Architectural / Restoration

Architectural Molding is the art of manufacturing construction pieces that resemble high value materials – such as middle-age stones or marble – by using concrete or gypsum.Architect.shutterstock_174539687

Reproduction materials used:
→ Concrete
→ Stone
→ Plaster
Gypsum
→ Polyester Resin
→ Polyurethane Resin
→ Polyurethane Foam
→ Fiber Reinforced Polymer

Choosing the best suited product:
→ For applications requiring high dimensional accuracy a polyaddition RTV is recommended.

→ For molding vertical surfaces, use a putty or a thixotropic additive.
→ Softer durometers are best for molding tight radius or parts with deep undercuts.
For large molds, higher durometers work best.
→ Polycondensation RTVs are well suited for plaster, gypsum, and concrete molding.
→ For convenience, Elkem polyaddition silicone bases may be cured with a variety of crosslinkers to achieve varying hardnesses.

Recommended BluesilTM RTV-2 Products for Architectural Molding

⇒Click on a product name to download the TDS

Products Shore
Hardness
(Sh A)
Mixed
Viscosity
(cps)
Tear
Strength
(ppi)
Tensile
Strength
(psi)
Elongation
(%)
Pot life at
25º C
(hrs.)
Demolding
at 25º C
(hrs.)
Specific
Gravity
Addition
Condensation
V-330 w/ CA 35 25 10,000 180 640 510 2 6 1.30
V-330 w/ CA 45 33 10,000 170 650 500 2 6 1.30
V-340 w/ CA 35 40 25,000 180 870 500 2 6 1.33
V-340 w/ CA 45 47 25,000 150 800 400 2 6 1.33
V-340 w/ CA 55 53 25,000 75 700 340 2 6 1.33
RTV-3460 A/B 56 70,000 140 900 190 3.5 12 1.21
V-1065* 25 71,000 145 670 415 5 16 1.12
RTV-3625** 25 44,000 132 390 450 4 16 1.12
GP-25* 22 58,000 155 580 378 3.5 16 1.18
V-1067 A/B* 40 93,000 67 775 390 5 16 1.14
V-1069 32 Thixo. 90 580 420 2.75 16 1.12
 * Hi-Pro Green (When catalyzed w/ Hi-Pro Blue, Pot life = 2hrs. & demold time is 6hrs.)

Complementary Products

PT Accelerator
-Shortens cure times at room
temperature for addition
chemistry
Vicure 2
-Shortens cure times at room
temperature for condensation
chemistry.
Thixo. Add. 22646
– Additive to develop a thick paste,
useful for brush-on applications at
1-3% addition by weight for condensation
chemistry or at 0.1% addition by
weight for addition chemistry.
SDS Catalyst
– Thixotropic catalyst for 10:1 mix
ratio condensation
chemistry.