Building Materials Corporation of America has raised its offer for Dallas-based roofing and building products company ElkCorp (NYSE: ELK) from $40 per share to $42 per share. This is now the second time that BMCA has topped an offer from The Carlyle Group, which originally bid $38 per share and later upped it to $40.50 per share. UBS is running the auction. www.elkcorp.com www.carlyle.com

Claros Diagnostics Inc., a Woburn, Mass.-based developer of handheld urological cancer diagnostic testing system for point-of-care use, has raised $7.8 million in Series A funding. Oxford Bioscience Partners led the deal, and was joined by Bioventures Investors, Accelerated Technologies Partners and Commons Capital. www.clarosdx.com

Scott Darling has joined Frazier Technology Ventures as its fifth partner. He has spent the past seven years with Intel Capital, and 17 years overall with Intel Corp. www.fraziertechnology.com